Biography: Lu Wei, male, studied in the Department of Polymer of Zhejiang University in 2004~2014, and obtained a Bachelor’s Degree in Engineering and a Doctorate Degree in Science; Since July 2014, he has been working in the Ningbo Institute of Materials Technology & Engineering, CAS, and now a researcher and doctoral supervisor. With long-term focus on the research of fluorescent chromatic polymer hydrogel, he has achieved a series of new results in the multi-color control method for fluorescent polymer hydrogel and the multi-functional synergy mechanism of biomimetic color - shape response and in the past 5 years, has published more than 20 first/communication papers in Acc. Chem. Res., Adv. Mater., Angew. Chem. Int. Ed., Cell Reports Physical Science, Adv. Funct. Mater., ACS Nano, Chem. Soc. Rev., Aggregate, SmartMat and other domestic and foreign journals. He has also presided over more than 10 projects such as the National Natural Science Foundation of China (2020 & 2017), Youth (2015) Project, Zhejiang Natural Science Foundation Major Project (2021), etc., He has been selected to multiple talent programs such as Outstanding Youth Talent of Zhejiang Province (2022), Outstanding Young Scholar of Zhejiang Province Ten-Thousand Talents Plan (2021), Chinese Academy of Sciences Youth Promotion Association (2019), etc.

Abstract: Fluorescent color-changing polymeric hydrogel, a soft substance formed through the swelling of its 3D polymer network by water molecules of solvents, features the common performance advantages of classical stimuli-responsive fluorescent color-changing polymer and polymeric hydrogel, finds great application prospects in the fields of sensing detection and soft robots, etc., and represents one of the key development directions of advanced luminescent polymers. However, classical polymer hydrogels of multi-fluorophore random copolymerization generally have limitations such as narrow range of discoloration and functional singularity. In view of these bottlenecks, the orderly arrangement of multilayer structures of different pigment cells in biochromic skin was imitated by the applicant, and the "biomimetic multilayer structure dynamic network", a new universal method for constructing a wide-range fluorescent chromatic polymer hydrogel was proposed. With the anisotropic composite structure of biochromic skin and deformed muscle soft tissue as reference, a new multifunctional synergistic mechanism such as biomimetic color change - shape chagning of fluorescent gel was proposed. This paper has also further promoted the application demonstration of visualized rapid inspection of food safety with fluorescent color-changing gel.

Biography: Lu Lingbin, Ph.D. in Applied Chemistry from Central South University, Professor of Materials Science and Engineering at Hainan University, second-level candidate of "515 Talent Project" in Hainan Province, top-notch talent in Hainan Province. She has been a visiting scholar at the University of Pennsylvania and the School of Materials Science and Engineering, University of Manchester. Her main research direction is the development and application of sustainable, environment-friendly functional materials, including using natural polymers and carbon dioxide to develop a series of environmentally friendly functional materials, such as materials for environmental remediation, superabsorbent materials, biomedical materials, biodegradable materials, smart response materials, etc. He has presided over and participated in 12 projects and published more than 80 academic papers, including over 30 high-quality papers as the first or corresponding author, has been granted 4 invention patents, and participated in the compilation of 5 textbooks. He has won the first prize of Hainan Science and Technology Progress Award, the first prize of Haikou Science and Technology Progress Award, and the second prize of Excellent Scientific Research Achievements of Colleges and Universities in Hainan Province.

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Biography: Xuemin Du is a full professor at Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), where he is also the Director of Center for Intelligent Biomedical Materials and Devices (IBMD). He obtained his two Ph.D. degrees from University of Science and Technology of China and City University of Hong Kong. In 2013, he joined the Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS). His research interests cover mainly intelligent polymers, bio-adaptive interfaces, and smart wearable and implantable devices (e.g., soft sensors & actuators, tissue engineering scaffolds, bioelectronics). He has published high impact articles in Science Advances, Matter, Advanced Materials, Advanced Functional Materials, and National Science Review, etc. He was awarded the National Science Foundation of China’s Excellent Young Scientists in 2020, and the RSC Nanoscale Emerging Investigator in 2021.

Abstract: Emerging wearable and implantable bioelectronics have been significantly revolutionizing the diagnosis and treatment of a variety of diseases. However, the geometrical and mechanical mismatch between tissues and bioelectronics remains a great challenge for achieving optimal performances and functionalities for bioelectronics. Adaptive neural interface materials and bioelectronics enabling active compliance with human body tissues offer promising opportunities for addressing the challenges through programming their geometries on demand. Here, we first report our recent progresses on the bio-inspired design, preparation, and programming of shape-morphing polymers. In addition, smart polymer-based flexible electronics with shape-morphing, anti-inflammatory, and stimulating capabilities are further introduced. It can be envisioned that such adaptive bioelectronics will shed light on the development of next-generation paradigms for biomedical domains.

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 Biography: Lidong Zhang is currently working at East China Normal University. He received his doctor degree from school of polymer science and engineering of Pusan National University in Korea 2013. Then he moved to New York University Abu Dhabi for three-years postdoctoral research. He was appointed as professor position at East China Normal University in 2016, where he established a very active research group and carried out a series of interesting scientific exploration on hydrogel organoids, electrochemistry-induced interfacial adhesion and stimuli-responsive smart polymer films. He has obtained totally 5 national and local research projects and published more than 50 papers in Nat. Commun., Adv. Mater., Angew. Chem. Int. Ed., Adv. Funct. Mater, and so on, and 20 papers with impact factor > 10.

Abstract: Hydrogel is of biocompatibility and mechanical softness, which can be used as implantable materials for less damage to native body. Thus, it is of great importance for biomedical applications. Especially, hollow structures enable broader application of hydrogel materials. For example, hollow hydrogels-constructed organoids such as blood vessels and kidney can provide rich experimental data for medical reference. However, for building hydrogel organoid, it is essential to prepare mechanical strong and multibranched hollow hydrogel tubes. Therefore, development of new chemical and physical protocols for construction of mechanical strong and multibranched hollow hydrogel tubes is of great significance. This report will thus focus on the chemical-forming mechanism of multibranched hollow hydrogel, physical properties and functional simulation of kidney organoid to demonstrate the powerful potential of hydrogels.

Biography: Dr. Ye Yanan, Professor, Ph.D. Supervisor, was selected into the Youth Project of 2022 National Overseas High-level Talent Introduction Program (** Outstanding Youth). She graduated from the Department of Polymer Science and Engineering, Zhejiang University with a Master’s Degree in Polymer Materials In March 2014. Then she pursued her further education at Hokkaido University in Japan under the supervision of Professor Gong Jianping, a renowned Chinese scholar in the field of hydrogels and received her Ph.D. in Life Sciences (Life Fusion Sciences) in September 2018. After graduation, she conducted postdoctoral researches at Global Institution for Collaborative Research and Education (GI-CoRE), Graduate School of Life Science, Hokkaido University. In May 2022, she joined College of Materials Science and Engineering, Taiyuan University of Technology through Taiyuan University of Technology High-level Talents Introduction Program (Level 6). In November 2022, She became a professor and doctoral supervisor by fast-track promotion.She’s interested in the research of rheology of gels and elastomers, toughening mechanism and functionalization of hydrogel composites. In the last 5 years, she has published 21 papers in PNAS, Adv. Funct. Mater., Macromolecules and ACS Macro Letter in internationally renowned academic journals and was authorized two Chinese invention patents. She has presided over 1 national key major project and a special scientific research project of the Overseas High-level Talents Introduction Program of Taiyuan University of Technology.

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Biography: Member of the Standing Committee of Heilongjiang Youth Federation and winner of Heilongjiang Province Top Ten Outstanding New Youth Award. A National Young Talent, winner of National Excellent Youth Medal and Youth May Fourth Medal of Heilongjiang Province. He was selected into the Young Talent Support Project of China Association for Science and Technology, Top Talent in Forest and Grassland Science and Technology Innovation of the State Forestry and Grassland Administration, and Young Scholar of Longjiang Scholars Program. Mainly engaged in the research of wood physics, he’s made a series of innovative research work in the depolymerization, recombination and utilization of forest wood fibrils. He has published more than 70 research papers in journals such as Advanced Materials, Chemical Society Reviews, and Matter, etc. He has published two academic works in Science Press. He has won the China Forestry Youth Science and Technology Award, Heilongjiang Youth Science and Technology Award, the second prize of the Heilongjiang College Teacher Teaching Innovation Competition, and the Young Teachers Fund for Higher Education Institutions of Fok Yingdong Education Foundation, etc. He is a member of National College Huangdanian-style Teachers Team, National Worker Pioneers Team, and Heilongjiang Province Touyan Team Backbone Member. He is a member of China Young Science and Technology Workers Association and member of the Cellulose Professional Committee of the Chinese Chemical Society.

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 Biography: Qian Zhao learned chemical engineering in Zhejiang University and graduated with a B.S. degree in 2004. He then received his doctor's degree from Zhejiang University in 2009. During the following four years he worked for Zhejiang University and afterwards for Helmholtz-Zentrum Geesthacht (HZG) in Teltow, Germany with Professor Andreas Lendlein as a postdoctoral researcher. He became a faculty member of College of Chemical and Biological Engineering, Zhejiang University in 2013, and had been promoted to and was promoted to Professor in 2021. He received the “Xingrui Outstanding Researcher award” in 2016 and was funded by the National Natural Science Foundation of China for Outstanding Young Scholars in 2018. His current research interests focus on shape changing polymers especially shape-memory polymers, stimuli-responsive hydrogels, and four-dimensional printing. He has published more than 90 papers in prestige journals including Science Advances, Nature Communications, Advanced Materials, etc.

Abstract: Reversible shape-shifting hydrogels exhibit great potential in diverse fields. Repeatable programmability for the shape transformation has newly been enabled in thermally responsive hydrogels via engineering the chain orientation of the polymer network, which substantially promotes the transformation capability. However, diversified responsive behavior and the enabling mechanism require further investigation. Here we report an ionic strength (IS) responsive hydrogel enabling the programmable reversible shape transformation based on a semi-interpenetrating network of polyacrylic acid (PAA) and polyvinyl alcohol (PVA). Deformation of the hydrogel upon external force can be fixed due to the crystallization of PVA underwent cyclic freezing-thawing. Therefore, the chain orientation can be retained in the deformed area, enabling the programmable IS responsive actuation. In contrast to the thermally responsive actuation originated from the lower-critical-solution-temperature phase transition, the IS responsive actuation does not accompany any phase change, and the corresponding mechanism is proposed. Reversible bending providing an actuation angle as large as 80° can be achieved after optimization of the PVA content. The PVA crystals can be melted upon heating, and the responsive actuation can thus be reprogrammed. In addition, utilizing a digital light 3D printer, the hydrogels are further fabricated into arbitrary geometries, thus realizing more complex actuations.

Biography: He’s mainly engaged in the research of carbon-based, polymer-based functional materials and utilization of natural resource of water and vapor and published more than 80 high-level SCI academic papers, including more than 30 as the first and corresponding author, including Nature Nannotechnology, Nature Communications, Account Chemical Research, Advanced Materials, Advanced Functional Materials, ACS Nano, Nano Energy, Angew. Chem. Int. Ed, etc., which have been specially introduced by top scientific journals such as Nature Materials, Chemistry World, Chemistry Views, New Scientist, Wiley Views, and Acta Physico-Chimica Sinica, etc., and has been covered by authoritative media such as the website of the Central People’s Government, Xinhua News Agency, and China Science News, etc. He has presided over the Outstanding Youth Fund of National Natural Science Foundation of China, General Project, Aerospace Science and Industry Fund, etc. and participated in the National Key Research and Development Program projects. He has won the Outstanding Early Career Investigator in Nanoscience Award/IOP (2022), the Gold Award of the National Final of the China College Student Entrepreneurship Plan Competition (2020) and the Silver Award of the China Exhibition of Inventions (2019), etc.

Abstract:  Graphene is a material with high specific surface area and tunability. In this report, the adjustment of graphene gel’s interaction with light and water has been achieved through the regulation of the physical structure and chemical composition of graphene gel so that the rapid solar-thermal water evaporation has been successfully developed, enabling the functional applications such as efficient green seawater desalination, high salt water treatment, extraction drinkable water from air, etc. which have been authorized various national patents, and have extensive practical value in building a low-carbon green society.

【１】A reconfigurable and magnetically responsive assembly for dynamic solar steam generation, Nature Communications, 2022, 13, 4335

【２】Janus-interface engineering boosting solar steam towards high-efficiency water collection, Energy & Environmental Science, 2021, 14, 5330

【３】Highly efficient solar vapour generation via hierarchically nanostructured gels, Nat. Nanotechnol., 2018, 13, 489–495

【４】Graphene-based functional architectures sheets regulation and macrostructure construction toward actuators and power generators, Accounts of Chemical Research, 2017, 50, 1663

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Biography: Fu Yu, School of Materials Science and Materials Engineering, Nanjing Forestry University, Ph.D. Supervisor, Distinguished Professor of Jiangsu Province. He received his Ph.D. in Materials Science from Washington State University in 2013. In September 2016, he was employed by the School of Materials Science and Engineering, Nanjing Forestry University. His main research includes: bio-based polymer nanocomposites, polymer aerogels and their functional composites, biomimetic materials, polymer electrolytes and gel electrolytes. He has published more than 60 SCI papers, such as Adv. Functional. Mater., Nano. energy, Nano. Letters, Chemical engineering journal. The H index is 70; he is also authorized more than 10 patents; He has published one monograph in Chinese and one in English, and presided over and participated in a number of National Natural Science Foundation of China.

Abstract: Nanocellulose (forest resources) has the advantages of abundant reserves, renewable cycling, fine nanostructure, good mechanical strength and low coefficient of thermal expansion, and nanocellulose based aerogels show great promising in energy storage, environment and thermal energy management due to their biodegradability. By imitating and applying the unique biological functions inherent in different species in nature, the structural design and transformation of cellulose are carried out, the surface chemistry of cellulose is adjusted to change the colloidal interface chemical properties of the precursor and the growth kinetics of ice crystals are regulated to control the microstructure of aerogel materials, the developed nanocellulose based composite aerogels with integrated structure and functionalities, and their applications in thermal management (radiative cooling), efficient interface evaporation and electrochemical energy storage are explored.

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Biography: Hao Bai is a professor at Zhejiang University. His research interests fall in multiscale design and fabrication of bioinspired materials. Representative works include high-performance thermal insulation fiber materials mimicking polar bear hair and lightweight, high-strength aerogel materials. His researches have been published in top-tier academic journals such as Nature, Nature Materials, Nature Communications, Science Advances, and Advanced Materials. His works have over 10,000 citations and have been highlighted in Nature, Science, and Chemistry & Engineering News. He has won the "Outstanding Youth Foundation" from National Natural Science Foundation, the National Overseas High-level Talents Introduction Plan Youth Project Funding, as well as the "Qiu Shi Outstanding Youth Scholar Award" from the Qiu Shi Science and Technology Foundation in Hong Kong, the Chinese Academy of Sciences’ Excellent Doctoral Dissertation Award, and the Chinese Academy of Sciences President’s Special Award. Currently, he serves as a member of the Biomimetic Materials Chemistry Professional Committee of the Chinese Chemical Society, the standing committee member of the Micro-Nano Composite Materials Professional Committee of the China Composite Materials Society, and the editorial board member of China Science and Technology Science.

Abstract: High-performance aerogel materials with low density, high specific surface area, high strength, and thermal insulation are in great demand in many fields, such as construction, energy, environment, aerospace. However, traditional aerogel materials still suffer from complex preparation processes and poor mechanical properties. The ice-templating technique holds promise to become a powerful technique with a balance between precise architectural control, easy scalability, versatility, and low cost. This report introduces the research progress of our group in using ice-templating technology to prepare high-performance aerogel materials, including a systematic study of ice-templating technology and the proposal of a new method to induce the ordered assembly of materials through the surface characteristics of the cold source and the design of the temperature fields. Based on the ice-templating technique, our group has developed graphene aerogels with both high strength and high elasticity, expanding its potential applications in the field of flexible electronics, as well as flexible and stretchable silicone rubber aerogels for high-performance thermal insulation materials.

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Abstract: Thermal runaway (TR) propagation is considered to be the utmost safety issue in the application of lithium-ion batteries (LIBs), which raised extensive concern. In order to prevent and control the risk of TR propagation, it is one of the effective technologies to use high-efficiency insulation sheets to separate battery packs. Hence, we report a novel method “in-situ supercritical separation (ISS)” to fabricate co-precursor aerogel (CA) sheets based on our self-designed device. ISS method can effectively reduce the preparation time of aerogel sheets to 6 hours, and greatly reduce the amount of solvent used, without additional solvent replacement or pressurization. Benefit from the advanced methods, CA sheets shows excellent compressive properties, superior insulating performance and high-temperature resistant. In detail, CA sheets exhibit compression strength of 638.5 kPa (50% strain), low energy loss coefficient (0.238), superior fatigue resistance (10000 compressions) and an ultralow thermal conductivity (0.0205 W/(m·K)). Further thermal runaway tests show that the TR propagation among fully charged LIBs with the highest temperature of up to 836.2 °C, is successfully suppressed by 2-mm-thick CA sheets, yielding a maximum cell-to-cell temperature gap of 767 °C. In short, the ISS method provides a new idea for the preparation of excellent battery insulation sheets, and has broad application prospects.

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Biography: Xinliang Wang, Master Degree, the Executive Director of Building Energy Efficiency Association. Several years ago, he was engaged in silicone material application research and production operation management in one public company of China. Currently, he is the General Manager of Nano Technology Co., LTD.

Recent few years, he was participated in the design of pipeline insulation site construction scheme, presided over the company's scientific and technological achievements transformation project. He is proficient in the production process of silicone which is the main raw material of aerogel, and aerogel production process. What’s more, he is also participated in the compilation of Zhejiang engineering construction standard "Residential Building Energy Saving Design Standard", and achieved less than 20 invention and utility model patents in the field of organic silicon and aerogel industry.

Abstract: The report briefly describes the development of aerogel, and its Rises Road under the guidance of policy. Combined with the general environment, introduce the present situation of aerogel industry and the market scale of aerogel, compare the technological route of aerogel and analyze, state the performance differences of aerogels with different processes. In the meanwhile, introduce aerogel products how to achieve the performance advantage and assist carbon economy in the construction and new energy sectors.

Biography: Dr. Yuekun Lai is a Fujian province “Minjiang Scholar” special-appointed professor at the College of Chemical Engineering at Fuzhou University, China. He received his Ph.D. degree from the College of Chemistry and Chemical Engineering, Xiamen University. During 2009–2011, he worked as a research fellow at School of Materials Science and Engineering, Nanyang Technological University, Singapore. In July 2011, he moved to Muenster University with Prof. Harald Fuchs and Prof. Lifeng Chi. During 2013–2018, he was a full Professor at the National Engineering Laboratory for Modern Silk, and School of Textile and Clothing Engineering in Soochow University. His research interests are focused on surface and interface modification, bioinspired functional films with special wettability, membrane separation and purification, energy and environmental applications. He is selected as the 2018-2022 Highly Cited Researchers (Clarivate Analytics), and the recipient of a 2016 Journal of Materials Chemistry A (JMCA, RSC) Emerging Investigators award, and published more than 200 peer-reviewed SCI papers with over 17000 citations (H-index 75), and as Editor of Chemical Engineering Journal (IF=16.744) and Section Editor-in-Chief of Polymers, and editorial board member of Green Energy & Environment, Advnaced Fiber Materials, Polymers and Acta Physico-Chimica Sinica.

Abstract: Inspired by the creature surface with superwettability in nature, special wettability has attracted a lot of interest and attention in both academia and industry. In this talk, theoretical models and fabrication strategies of highly porous gel materials have been discussed in detail. The strategies for constructing robust functional gel surfaces with anti-wetting property are categorized and discussed based on the morphology of particles coated on the textile fibre. Such special wettability gel materials are demonstrated with self-cleaning, oil/water separation, self-healing, shielding, photocatalytic, anti-bacterial, and air purification performances. Correspondingly, potential applications have been illustrated for PM capturing, oil/water separation, catalytic degradation, energy storage, flexible sensors. In each section, representative studies are highlighted with emphasis on the special wetting ability and other relevant properties. Finally, the difficulties and challenges for practical application were briefly discussed.

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Biography: Prof. Dr. Shen Jun, who is director of Center of Nano Science and Technology of Tongji University and director of Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology. He is also vice chairman of the Chinese Ceramic Society Sol-Gel Branch, vice chairman of the Chinese Ceramic Society Insulation Branch, the vice chairman of the Aerogel Branch of China Adiabatic and Energy Conservation Association, and member of the China Electrotechnics Association Supercapacitor and Energy Storage Specialized Committee. Enjoy the special allowance of the State Council. Had been in the field of aerogel research for 30 years, in recent years, responsible for more than 10 national science and technology projects, got 10 awards of science and technology with the provincial and ministerial level, published more than 500 scientific papers in important academic journals, obtained more than 30 Chinese national patents, and published 3 monographs.

Abstract: This report introduces some new developments of aerogels in the field of thermal insulation, and also introduces the research and application of aerogel materials in many new fields, including environmental protection, catalysis, energy storage, energy conversion, sensors, biomedicine, safety and health. The interactions of aerogels with electromagnetic wave, acoustic wave, intense laser and high-speed moving particles are emphasized.

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Biography: I obtained the B.E. (2011) and Ph.D (2016) from Beijing Institute of Technology and Peking University, respectively. After postdoc research from 2016-2021 in Nanyang Technological University, TU Dresden, and Hong Kong University, I joined Beijing Institute of Technology in 2021 as professor. My research focus on controlled synthesis of metals-, nanocarbons-, and polymers-based aerogels and hydrogels, and their applications towards electrocatalysis, energy storage and conversion, and environment remediation. Particularly, a series of achievements in the field of metal aerogels have been made. So far, I have published more than 40 SCI papers, and I am the first or corresponding author for more than 20 papers published on journals such as Nature Communications, Science Advances, Matter, and Advanced Materials. I am a youth editor for SmartMat and a review editor for Frontiers in Nanotechnology. I have been invited for reviewing more than 100 papers published in journals including Nature Communications, Advanced Materials, and Nano Letters.

Abstract: As a new member in the aerogel family, metal aerogels (MAs) are a class of porous materials entirely structured from metals. Combining the attributes of metals and the unique structure of aerogels, MAs feature broad application prospects, particularly in the field of electrocatalysis. Compared to the classical aerogel systems, the synthesis of MAs involves a couple of new processes, such as the formation and fusion of nanoparticle (NPs). This fact brings new challenges to the controlled synthesis of MAs, thus restricting their materials basis as well as application investigations. In this regard, we extract several key parameters (e.g., initiators, reductants, ligands, and external fields) during MAs fabrication. By rational manipulating these factors, we demonstrate how to enrich composition/structure diversity of MAs and promote their application performance.

Biography:Yan Xuzhou, Researcher and Doctoral Supervisor of School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University. Received his Ph.D. from Zhejiang University in 2014. During 2014~2018, he was engaged in postdoctoral research at the University of Utah and Stanford University. In September 2018, he joined Shanghai Jiao Tong University to carry out independent research work. In 2018, he was selected into the Distinguished Professor (Oriental Scholar) Support Program of Shanghai Universities, and in 2021, he was funded by the National Natural Science Foundation of China Outstanding Young Science Fund. His main research interests are dynamic polymer materials and mechanical interlocking polymers.

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Biography: Jian Hu is a Professor and Doctoral supervisor at School of Aerospace in Xi’an Jiaotong University (XJTU), and was selected by “Young Talent Recruiting Plan A” in XJTU in 2016. He graduated in chemical engineering and technology from Zhejiang University in 2006, and further obtained his master’s degree in 2008. He received his doctor's degree in the Department of Biology from Hokkaido University, Japan in 2012 (Supervisor: Prof. Jianping Gong). From 2012 to 2015, he worked as a postdoctoral fellow in the Department of Chemistry, Hokkaido University. His research interests include polymer soft material synthesis, multi-scale structure design, mechanical and multifunctional property analysis, and intelligent soft material devices. He has published more than 40 papers on the international journals such as Nature Materials, Nature Communications, JACS, Nano Letters, Materials Horizons, Small, and Macromolecules.

Abstract: Ionogels have the unique advantages of ionic conductivity, nonvolatility, thermal and chemical stability, large operating temperature range, and wide electrochemical window, so have been widely used in flexible electronic fields such as wearable electronics, energy storage devices, actuators and sensors. However, most existing ionogels suffer from low mechanical performances (strength < 1 MPa, toughness < 1 kJ/m², and modulus < 1 MPa). In this work, we propose a simple and universal design principle called in situ phase separation. Two polymer components with different solubility form a bicontinuous phase separation structure in situ in ionic liquid by rapid random copolymerization in one step. The resultant ionogels simultaneously improve their strength (12.6 MPa), toughness (24 kJ/m²), modulus (46.5 MPa) and stretchability (600%), and integrate functions such as self-recovery, self-healing, shape memory, anti-swelling and 3D printing. The working mechanism of high mechanical properties and versatility is revealed from the perspective of phase separation structure.

Biography: Prof. Ji Liu joined the Department of Mechanical and Energy Engineering, Southern University of Science and Technology (Sustech, China) in Sept 2019. He obtained his PhD from the University of Liege (Belgium) and University of Bordeaux (France) under the framework of Erasmus Mundus Joint PhD program in 2013. Prior to joining Sustech, he conducted post-doc research in the University of Cambridge, Massachusetts Institute of Technology and Harvard Medical School. His research interest includes soft material engineering, extreme mechanics, tissue engineering, flexible electronics, and has published over 40 papers in those journals like Sci. Adv., Nat. Commun., Acc. Chem. Res., PNAS, Adv. Mater., JACS, Angew. Chem. Int. Ed., Adv. Funct. Mater. He is also the recipient of several awards, including Fellow of the Institute of Materials, Minerals and Mining (2021), Innovators Under 35 of China by MIT Technology Review (2020), Guangdong Pearl River Talents Program Introduces High-Level Talents (2020), Overseas High-Caliber Personnel in ShenZhen (2020), Young Investigator Award by Japan Polymer Group (2017), Marie-Curie Research Fellow (2015), etc. 

 Abstract: The human tissues and organs are mostly soft, wet and bioactive; however, machines are commonly hard, dry and biologically inert. Bridging human-machine interfaces is of importance to address those grand challenges in health, energy and suitability. Functional soft materials emerging at the interface between engineering and biological systems are challenging our fundamental knowledges, motivating technological innovations, and enabling impactful applications. Inspired by the nature’s design principles, a great variety of functional soft materials with extreme mechanics and functions could be readily manufactured.

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Biography: Ma Chunxin, male, is Researcher and Doctoral Supervisor of the State Key Laboratory of Marine Resources Utilization in the South China Sea, Hainan University. He received his Ph.D. in Chemical Engineering from the School of Biological and Chemical Engineering, Zhejiang University in June 2015 and was engaged in postdoctoral research at the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences from 2015 to 2017. He has published more than 50 SCI papers, including over 20 papers as first/corresponding author (including 2 highly cited ESI papers, 10 research papers with IF>15 in Q1 of the Chinese Academy of Sciences, such as Advanced Materials, Advanced Functional Materials, Advanced Science, etc., with a single paper cited more than 300 times), with H-index of 23 ad total of more than 2300 citations. He is a member of China Polymer Expert Think Tank, member of Hainan Provincial Expert Database, Guest Editor-in-Chief of the SCI journal "Gels" in Q3 of the Chinese Academy of Sciences. He presides over 9 government sponsored researches such as the National Natural Science Foundation of China and 7 non-government sponsored researches. He has been authorized 6 national invention patents.

Abstract: Inspired by the rich and exquisite orientation structure formed by the natural evolution of organisms and their hierarchical micro/nano structures, a series of functional and intelligent biomimetic hydrogels were developed, and their specific functions and application prospects were systematically studied, based on the preliminary researches by the group in the field of hydrogels. Firstly, a series of functional hydrogels with biomimetic oriented pore structure were developed by using the "frozen directional pore making method" and other approaches to obtain excellent seawater uranium extraction performance and seawater desalination performance, based on the efficient conductivity of water molecules and hydrated ions by oriented pores. Secondly, a series of smart-drive hydrogels with biomimetic oriented nanofiber structures were developed by introducing the "directional electrospinning method", etc., and a variety of smart bionic devices with fast response, strong driving force and high controllability of drive were successfully designed. The invention of these new functional/smart hydrogels of biomimetic directional structures is expected to promote the accelerated development of biomimetic polymer materials, exploration of marine resources, flexible smart drives and other related research fields.

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Abstract: Hydrogel has been widely used in traditional fields such as bioengineering and medical equipment. At the same time, it has also been applied in emerging fields such as underwater acoustics, sports, and biomimetic smart materials. However, there are still some problems in the application of hydrogels in these emerging fields, such as weak mechanical properties of large-scale hydrogels, non-tunable acoustic properties, and low degree of intelligence. To further improve the mechanical properties of large-scale hydrogels, we proposed an in situ inhibition approach to simultaneously improve the homogeneity and ionic crosslinking density of hydrogel. Regarding the non-tunable acoustic properties, we developed a method to achieve hydrogels with broadband tunable acoustic properties by varying the volume ratio of the channels and adding filler materials, and the underwater acoustic transmission coefficient can be changed from 0 to 1 at the frequency from 0.4 kHz to 150 kHz. Focusing on the problem of low intelligence, we proposed a method of interfacial polymerization and achieved self-growing hydrogel materials. Our research demonstrates the potential application of hydrogels in ice rink construction, underwater acoustics, intelligent robotic and other fields.

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Biography:Yiming Wang is a professor in the field of polymer and supramolecular materials working at East China University of Science and Technology (ECUST), he obtained his PhD in chemical engineering and technology with Prof. Xuhong Guo at ECUST (2017), after postdoctoral work at Delft University of Technology with Prof. Jan van Esch, he joined ECUST. His research focuses on smart materials controlled by chemical reactions.

Abstract: Supramolecular self-assembly is wide-spread in biological system, which is usually controlled by sophisticated metabolic processes, such as enzymatic reactions, dissipative reactions of chemical fuels, giving rise to various advanced functions, such as dynamic adaptivity, self-healing. Realizing such self-assembly in synthetic scenario would open a new way towards new generation of supramolecular materials. In recent years, we have developed a dynamic supramolecular hydrogel system based on in situ formation of hydrazone bond, by which we achieved spatiotemporal control over the self-assembly process, leading to various hierarchically structured supramolecular hydrogels. Further, we have realized dynamic self-assembly using a reaction-diffusion strategy which enables control over the growth of supramolecular hydrogels in time and space. These studies may contribute to the creation of new supramolecular materials with life-like properties.

Biography: Dr. Qigang Wang received his bachelor’s degree in 1999 and Master’s degree (Supervisor: Prof. Jinsheng Gao) in 2002 from East China University of Science and Technology. He then obtained his Ph.D. in 2005 from Shanghai Institute of Ceramics, Chinese Academy of Sciences (Supervisor: Prof. Qiuming Gao). He was the postdoctor at the Hong Kong University of Science and Technology from 2005-2007 (Supervisor: Prof. Bing Xu). He continued the postdoctor trainning at The University of Tokyo and Riken from 2005 to 2011 (Supervisor: Prof. Takuzo Aida). He is a currently a professor in the School of Chemical Science and Engineering, Tongji University. He has obtained the National Science Foundation of China in 2021. He has published about 70 SCI paper as first author and corresponding author, which include Nature, Nat. Commun., Adv. Mater., J. Am. Chem. Soc. and Angew. Chem. Int. Ed.

Abstract: Due to its 3D crosslinked networks and adjustable physicochemical properties, hydrogels have been widely applied in tissue engineering, drug-delivery system, pollution regulation, polymer electrolyte, agricultural drought-resistance, cosmetic and food area. However, the harsh prepared conditions and high chemical residues of traditional hydrogel both seriously limited their bio-related applications. We introduced the recent advances on tandem enzyme complex for the radical polymerization and the biomedical application of the enzyme-laden hydrogel by the controllable regulation of biochemical signals in body. The results are shown as followed: 1) Developed the biomimetic self-initiated polymerization by multienzyme complex and introduced supramolecular assembled components to solve the undisturbed enzyme immobilization and the optimization of biocatalytic channel; 2) Verified the multi-enzymatic hydrogelation within tissue microenvironment and explored the application for in-situ tissue repair and in vivo imaging; 3) Applied hydrogel integrated multienzyme for the metabolic regulation of reactive oxygen species on tumor sites and established a redox homeostasis based tumor biocatalytic or physical-biochemical combined therapy strategies. 

Biography: National Distinguished Young Scholar, Sichuan Academic and Technical Leader. Born in 1980, he graduated from Sun Yat-Sen University with a bachelor’s degree in 2003 and a Ph.D. from the Department of Polymers of Peking University in 2008. From 2008 to 2015, he was engaged in postdoctoral researches at Peking University, Max Planck Institute in Germany, and Harvard University in the United States. In 2015, he was Researcher at Leibniz Institute of Advanced Materials with independent research group PI and since 2017 Professor at University of Electronic Science and Technology of China. Mainly engaged in the research of cross-linked polymer materials, he has published more than 100 SCI papers in Nat. Mater., Nat. Commun., Adv. Mater., J. Am. Chem. Soc., Angew. Chem., Int. Ed. and other journals.

Abstract: Interfacial adhesion in humid environments causes various problems, e.g., marine fouling, molding, icing, etc., which will not only lead to huge economic losses, but also cause serious environmental pollution or safety hazards. To tackle these problems, researchers have developed various antifouling techniques (e.g., superhydrophobic coating), which, however, are often not suitable for humid, high-pressure environments, or require the use of toxic agents. Relatively speaking, attributing to the fluidity and incompatibility of liquid molecules on its surface, superlubricious coating can prevent the adhesion of various species effectively, features good compression resistance and non-toxicity, and is especially suitable for antifouling in humid environments. Organic gels are one of the most commonly used methods for constructing superlubricious  interfaces. In this report, I will introduce how we design the structure of organic gels to obtain the self-modulated secretion function of materials and realize long-term superlubricity, and share the explorations about how such materials are applied in marine antifouling, drag reduction, corrosion prevention of hydraulic engineering, and building energy efficiency.

Biography: Distinguished Professor of Chang Jiang Scholars Program of the Ministry of Education, Doctoral Supervisor at Department of Chemistry, Tsinghua University, Fellow of the Chinese Chemical Society and Fellow of the Royal Society of Chemistry; He has been selected into the Young Leading Talents of Scientific and Technological Innovation Program of the Innovative Talents Promotion Plan and the Leading Talent of the Ten-Thousand Talents Plan of the Central Organization Department of China, and won the "1st CCS-RSC Young Chemists Award" and The "7th BASF Youth Knowledge Innovation Award of the Chinese Chemical Society". He has served as the project leader of the "Outstanding Youth Fund", key projects and innovation group projects of the NSFC, and Chief Scientist of the major basic research special project (973 Project) of the Ministry of Science and Technology. He is currently Deputy Editor of Polymer, Acta Polymerica Sinica, Chemical Journal of Chinese Universities, and Secretary General of the Polymer Discipline Committee of the Chinese Chemical Society. He’s mainly engaged in the research of nucleic acid synthesis and modification and nucleic acid based supramolecular materials.

Abstract: Due to of the rigidity and water-solubility of double-stranded molecules of nucleic acid, we propose and prepare a supramolecular hydrogel with a fully rigid molecular structure, which avoids the topological pores caused by the entropy curling of the polymer chain, and enables it the ultra-high permeability similar to the extracellular matrix. Our recent research also shows that nucleic acid polymer chains with precise complementary pairings can greatly slow down the kinetic process of interchain relaxation through "kinetic interlocking", so that the macroscopic mechanical properties of DNA supramolecular hydrogel systems are mainly related to the properties of the main chain within the perceptible time scale, showing mechanical strength similar to that of covalent cross-linked hydrogels. In the meantime, by changing the specific interaction, the "kinetic interlocking" of covalent/non-covalent bond synergy based on polymer chains can be broken to keep the extremely high response sensitivity of the system. Based on this, we have developed nucleic acid supramolecular components in multiple topological configurations to endow them with various responsiveness; by virtue of its high strength, rapid gel forming and good bio-compatibility, it has seen fine applications in 3D printing of living cells, spinal cord injury repair and osteoarthritis stem cell therapy, etc.

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Biography: Chang Jiang Scholar Program Distinguished Professor, winner of the National Science Fund for Outstanding Young Scholars, Chief Scientist of National Key Research and Development Program, and Chief Expert of the National Defense Science and Technology Innovation Special Zone. He currently serves as Dean of School of Chemistry, Beihang University, deputy of the 16th Beijing Municipal People’s Congress, member of the Department of Chemistry and Chemical Engineering of the 8th Science and Technology Commission of the Ministry of Education, Fellow of the first Chinese Chemical Society, Director of the Chinese Chemical Society, and member of the Polymer Discipline Committee of the Chinese Chemical Society. He has been mainly engaged in the design, preparation and application researches of biomimetic polymer composites of functional mechanics and published 90 papers about his academic achievements as the first / corresponding author in Nature, Nat. Rev. Mater., Nat. Commun., Sci. Adv., Angew. Chem. Int. Ed., Adv. Mater., J. Am. Chem. Soc. and other journals. He won the CCS-RSC Young Chemist Award in 2022, the Outstanding Youth Award of the International Society of Bionic Engineering in 2019, the Nanochemistry New Frontier Award of the Chinese Chemical Society in 2016 and the Research and Innovation Award of the Institute of Physical and Chemical Research of Japan in 2014. He has presided over the National Key Research and Development Program, international cooperation key project of the National Natural Science Foundation of China and the National Defense Science and Technology Innovation Theme projects, etc. He has made more than 70 invited reports and keynote reports at international and domestic academic conferences, which have been reviewed and reported in journals such as Science China Chemistry, etc. He currently serves as Executive Editor of the international journal Giant, and the editorial board member of Polymer, Polymer Journal, Chinese Journal of Polymer Science and other journals.

Abstract: Biogels in nature use the synergy of multi-constituent biomacromolecules to achieve a variety of life functions. The multi-constituent composition of polymers has become an effective way to develop high-performance polymer gels and is also an important frontier topic in the field of polymer science. To tackle the problems of poor mechanical properties and weak designability of the traditional polymer hydrogels resulted from their reliance on a single hydrophilic network, the structure-activity relationship between the multiphase structure and mechanical properties of muscle tissues was learned, systematic research was carried out around the key scientific issue of "molecular motion regulation in the confined space of multi-constituent polymers", a series of polymer gels and nanocomposites with high mechanical properties were designed and prepared and their applications in soft robots and wearable devices were explored. 1. By regulating the independent movement of the orthogonal network in confined space, the biphasic gel of multistability, high-magnification and variable stiffness was constructed. 2. The design concept of liquid polymer gel was proposed, and the elastomer materials with wide spectrum, wide temperature range and high damping were prepared by using the coordinated chain of the whole polymer chain and chain segment in confined space. 3. The enhancement mechanism of nanocomposites by the restriction effect of polymer chain motion in inorganic confined space was revealed, and the continuous large-area preparation of high-strength and high-toughness layered nanocomposites was realized by superspreading on gel interfaces.

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Biography: Yan Feng, Distinguished Professor of Suzhou University, Distinguished Professor of Jiangsu Province (2015), Winner of National Fund for Distinguished Young Scholars (2014), Chief Scientist of National Key Research and Development Program (2021). Mainly engaged in the design and synthesis of poly ionic liquid functional materials and its research in the fields of energy devices, electrochromic and other intelligent response materials. He was selected into the "New Century Excellent Talents Support Plan" of the Ministry of Education in 2007, the "Six Talents Summit Plan" of Jiangsu Province in 2008, the "333 Project" talent plan (the second level) of Jiangsu Province, the leading talents of scientific and technological innovation of the Ministry of Science and Technology, and the outstanding educators of Jiangsu Province in 2016. In 2017, he was selected into the leading talents of scientific and technological innovation of the national "Ten Thousand Talents Plan" and won the first prize of Jiangsu Provincial Science and Technology Award (ranking first). In 2019, he was selected as a cultivated member of "New Era Exemplary Grassroots" in Suzhou. In 2020, he was selected as a young and middle-aged expert with outstanding contributions in Jiangsu Province. In 2021, it was selected into the "333 Project" talent plan (the first level) of Jiangsu Province.

Abstract:Polyionic liquid is a kind of ionic polymer produced by polymerization of ionic liquid monomers and has anionic and cationic groups on the repeating unit. It has the excellent properties of both ionic liquid and polymer. Because polyionic liquids have the advantages of both ionic liquids and polymers, and overcome the fluidity of ionic liquids, they have become one of the hotspots in the field of polymer science in recent years.

This report will introduce the main preparation methods of (poly) ionic liquid based gels and their applications in the fields of energy science such as ionic skin and batteries, etc.

Biography:Pei Yuchen, Researcher, Chief Expert of advanced materials technology of China Aerospace Science and Industry Corporation, technical director of the new materials industry of the Third Research Institute, and Director of the Science and Technology Committee of the 306 Research Institute. He has been engaged in technical research of aerospace special materials for a long time and made outstanding contributions to promoting technological progress of aerospace materials. He is a winner of the ZHONGXIN Aerospace Defence Award and the National Innovation Pioneer Award.He has made many technological breakthroughs in the field of aerospace materials and won the Special Prize for National Defense Science and Technology Progress, the First Prize for National Defense Technology Invention and the Second Prize for National Science and Technology Progress. He is Vice Chairman of the Scientific and Technological Advisory Working Committee, Vice Chairman of the Aerospace Composite and Applications Professional Committee, and Vice Chairman of the Aerospace Power Composite and Applications Professional Committee of the Chinese Society for Composite Materials.

Abstract:Aerogel is a kind of nanoporous material, which has many excellent characteristics such as ultra-low density, ultra-low thermal conductivity, etc. and has been widely used in aerospace and other fields. The report summarizes the research status of aerogels in the aerospace field in recent years, especially the technical breakthroughs in China, and introduces the latest research progress and application prospects of aerogel materials in aerospace applications at home and abroad. The core technologies related to the preparation and performance of aerogels are analyzed, and the research status of different types of high-performance aerogels used in aerospace, such as high temperature resistant, ultra-low density and erosion resistant aerogels, is summarized with emphasis. Finally, the existing issues and future development directions of aerogels in the aerospace field are reviewed, hoping to promote the further development of aerogel materials in the field of aerospace.

Biography: Prof. Meifang Zhu, member of the Chinese Academy Sciences, TWAS fellow, is the current dean of College of Materials Science and Engineering and Director of the State Key Lab for Modification of Fiber and Polymer Materials at Donghua University. She has long been engaged in the fundamental and application research of functional fibers, composite nanofibers, intelligent fiber materials, and organic /inorganic hybrid materials. She has edited 10 books (chapters) and published more than 500 papers. She is also the author or co-author for more than 300 National Invention Patents, including 6 PCT. She received more than 10 scientific awards, including Second Prize of National Award for Technological Inventions (2020), National Innovation Competition Award (2017), Shanghai Role Model Workers (Exemplary Individual, 2020), etc. She is supported by the “Ten-Thousands Talents Program” and the team leader of the first awarded “Huang Danian Teacher Team”.

Abstract: Hydrogel is a typical soft and wet material with tissue-like modulus and cytocompatibility. It has great significance to simulate human fibrous tissue to prepare hydrogel fibers with high mechanical properties and intelligent response characteristics. However, due to the low molecular weight of monomer and crosslinking structure of hydrogel, the continuous construction of hydrogel fibers is still a challenge. In this report, we introduce a new strategy named dynamic cross-linked spinning, which can construct the crosslinking network synchronously in the process of spinning and hydrogel forming, thus making the large-scale production and functional construction of hydrogel fibers possible. Based on this strategy, a series of intelligent hydrogel fibers with controllable structure and adjustable performance are constructed, such as bionic muscle gel fibers, highly sensitive stress-strain sensing hydrogel fibers and hydrogel fibers with excellent optical conductivity, which can sense and transmit light, electricity and force signals. The exploration on applications of such hydrogel fibers in biophobic medicine, intelligent detection and other fields is also introduced.

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Biography:Yu Fang is an academician of the Chinese Academy of Sciences and a professor of physical chemistry and polymer science of Shaanxi Normal University. His research interests include mainly development of film-based fluorescent sensors (FFSs), and functionality-led dynamic molecular materials, where the emphases are given to the physical chemistry at the surfaces, interfaces and adlayers of the relevant systems.

Abstract: Low-density and high-strength polymeric foams are generally prepared using physical-foaming, chemical-foaming or hollow micro-beads addition techniques, but these methods suffer from their own limitations. The lecture as to be given is going to present a new strategy for the preparation of the high-performance polymeric foams with crosslinked polystyrene foam as an example. Different from conventional ones, the new strategy possesses a number of superiorities, such as: (1) the density and the internal structures of the polymeric foams are highly adjustable, (2) the technique can be used for the preparation of solid/solid and solid/liquid composite materials, (3) the process is compatible with casting and even 3D printing, and (4) the production process is green.

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Biography: Li Chuang, Distinguished Professor and Doctoral Supervisor of Department of Polymer Science and Engineering, University of Science and Technology of China, was selected into the youth program of the National Overseas High-level Talent Introduction Program, and served as a youth editor of VIEW and Smart Molecules. He received his Ph.D. from Tsinghua University in 2016 (Advisor: Professor Liu Dongsheng), and from 2016 to 2021, he was engaged in postdoctoral research at Northwestern University in the United States (Co-advisor: Academician Samuel Stupp). In June 2021, he joined University of Science and Technology of China to carry out independent research work of novel responsive polymer hydrogel materials, supramolecular assembly functional soft matter and photoresponsive biomimetic intelligent actuators, etc. He has published articles in Nature Materials, Science Robotics, Advanced Materials, Journal of the American Chemical Society, Angewandte Chemie and other journals, and his research results have been highlighted by journals such as Nature.

Abstract: Polymeric hydrogel is a type of cross-linked polymer with high water content. It can produce volumetric expansion or contraction through water absorption or water loss process by external stimulation, thus finding important applications in biomimetic shape change and soft-ware drive. The design and synthesis of new dynamic polymeric hydrogels to obtain precise and complex biomimetic functions has always been one of the key challenges in the field of polymer research. This report will discuss the photo-responsive "spiropyran hydrogel", reveal the mechanism and law of the molecular isomerization of spiropyran affecting the dynamic change of polymer hydrogel volume, with a focus on the demonstration of the application of photon-driven reversible shape change and mechanical actuation in soft robots.

Biography: Zhang Xuetong, Ph.D., Distinguished Key Researcher of Chinese Academy of Sciences, Ph.D. Supervisor of University of Science and Technology of China, Deputy Director of the SINANO Academic Committee, Visiting Professor at University College London (UCL), Newton Advanced Fellow of the Royal Society, Fellow of the Royal Society of Chemistry (FRSC), talent introduced by the "100 Talents Program" of the Chinese Academy of Sciences and talent introduced by the "Innovation and Entrepreneurship Program" of Jiangsu Province. He is also a member of American Chemical Society, Director of Sol-Gel Committee of the Chinese Ceramic Society, and member of the Nanochemistry Professional Committee of the Chinese Chemical Society. Evaluation expert of the National Natural Science Award (Materials Group) and member of the Aerogels National Standard Preparation Team. He’s mainly engaged in the structural design, controlled synthesis and application research of aerogel materials and has undertaken more than 30 projects as team leader, including the national key R&D plan. He has published more than 100 academic papers in well-known academic journals such as Nature communications and Advanced Materials, etc. as the first or corresponding author and his research results have been widely covered by Xinhua News Agency, People’s Daily and other news media.

Abstract: Aramid is a high-performance strategic material. Aerogels are porous, disordered and low-density solid materials with a nano-scale continuous network by sol-gel transition and special drying processes. Among them, aramid nanofiber aerogels, featuring both light weight and high strength of aramid and the lightweight and porosity of aerogels, are one of the polymer aerogels with the most extensive application prospects. This report focuses on how to design and prepare aramid aerogel fibers, aramid aerogel films and 3D printing aramid aerogel materials using aramid nanofibers as the basic construction units and making full use of the dynamic sol-gel transition, and explore the application prospects of these aerogel materials in emerging fields such as infrared stealth, electromagnetic shielding, thermal management structures and devices, and smart protection, etc.

Biography: Sufeng Zhang, female, professor, doctoral supervisor, Director of International Division, Dean of International Education College and Director of Hong Kong, Macao and Taiwan Office of Shaanxi University of Science and Technology. Shaanxi young and middle-aged leading talents in science and technology innovation, academic leader of pulp and paper making and engineering. Shaanxi Province Youth Science and Technology Award, Youth Surgeon, China Paper Society Cai Lun Youth Award winner; Ministry of Education national science and technology awards, degree centers, national natural science funds, postdoctoral funds, multi-provincial and municipal scientific research project evaluation experts, light industry discipline assessment experts; concurrently serving as Hunan Province Special Paper and Paperboard Engineering Technology Research Center expert steering committee members, International Ecological Economic Association (IEEPA) board members He is also a member of the Board of Directors of the International Ecological Economic Association (IEEPA), a member of the Board of Directors of the Xi’an European and American Friendship Association and the Xi’an Association of Overseas Chinese Students, and the Secretary General of the Shaanxi University of Science and Technology. He is a member of the editorial board of "China Paper" and a reviewer of Green chemistry, ACS Applied Materials & Interfaces, Carbohydrate polymer and other journals. He is mainly engaged in the research of fiber chemistry and functional materials.

Abstract: In recent years, wearable flexible electronic devices have developed rapidly and have potential applications in the fields of motion monitoring, medical rehabilitation, and soft robotics. Stretchable ionic conductive hydrogels are considered to be one of the ideal flexible sensor options due to their excellent flexibility, high elasticity, transparency, and tunable mechanical properties. However, it remains a challenge to construct ionic conductive hydrogels that combine excellent mechanical properties, high ionic conductivity, self-healing, self-adhesion, and good water retention by a simple one-step method. In view of this, an ionic conductive hydrogel with a semi-interpenetrating network structure (PAM/PBA-IL/CNF) was prepared by designing a multifunctional phenylboronic acid ionic liquid (PBA-IL) monomer in the presence of nanocellulose (CNF) through a one-step polymerization of PBA-IL/acrylamide (AM), which can simultaneously achieve excellent mechanical, conductivity and multifunctionality at the same time.

 Biography: Dr. Zhang Hulin, born in 1987, is a professor, doctoral supervisor and member of the Academic Committee at Taiyuan University of Technology. He was selected for the young-top-talent project of Shanxi Province and Sanjin Talent-Top Backbone Talent Project, as well as a Science and Technology Merit of Shanxi Province Universities and a recipient of Sichuan Outstanding Youth Fund. He graduated from Chongqing University with a Ph.D. in 2014. He was sent to Georgia Institute of Technology, USA on a general assignment for joint training with Academician Wang Zhonglin’s group from August 2012 to January 2014. In recent years, he has mainly researched low-grade thermal energy harvesting and passive sensing based on thermogalvanic gels. He has published more than 80 SCI papers in international academic journals such as Adv. Mater., Nano Lett., ACS Nano, Adv. Funct. Mater. and Nano Energy, of which he has 45 publications as the first/corresponding author (16 with IF>10). His papers have been cited more than 5,600 times with the h-factor of 37. Besides, his work was awarded the Second Prize of Natural Science of Shanxi Province in 2019 (ranked No. 1). He is in charge of the youth project of the National Natural Science Foundation of China, the sub-project of the National Key Research and Development Program, and the Natural Science Foundation of Shanxi Province.

Abstract: With the rapid development of flexible wearable electronics, the flexibility/stretchability and integrated power supply of sensors are increasingly demanding. The self-powered sensing technology based on gel thermogalvanic conversion can not only meet the devices’ requirements of flexibility/stretchability, but also provide passive sensing. This report will propose several feasible routes for collaborative improvement of thermoelectric conversion efficiency of PVA gel electrolytes, structural design of gel devices and self-powered wearable physical signs monitoring application, and explore the correlation law of gels’ Seebeck coefficient, effective conductivity and thermal conductivity with their preparation processes. The thermoelectric conversion principle by coupling entropy change of redox reaction and ion thermal diffusion is revealed, and the self-driven intelligent wearable electronics for multi-sign monitoring which can be conformally fitted with human body is developed. This research will actively promote the functional expansion of gel thermoelectric devices and their application in flexible wearable scenarios.

Biography: Prof. Bin Ding is the Director of Institute of Science and Technology in Donghua University. He is Distinguished Young Scientist of National Natural Science Foundation of China (NSFC), “Changjiang Scholar” of Chinese Ministry of Education, Leading Talent of National “Ten Thousand Plan”, and Highly Cited Chinese Researchers of Elsevier. Since 2000, Prof. Ding has made significant contributions to the controllable fabrication, functionalization, and application of fibrous aerogels. He has authored and co-authored over 400 peer-reviewed SCI papers published on journals such as Nat. Commun., Sci. Adv., Adv. Mater., Angew. Chem. Int. Ed. etc., and held over 140 approved innovation patents. He has undertaken more than 40 research projects ranging from Chinese Ministry of Science and Technology, NSFC, Science and Technology Commission of the Central Military Commission to industrial community. He has received many precious honors including the Distinguished Achievement Award of The Fiber Society (USA), First Prize of Scientific and Technological Progress in Shanghai, Textile Academic Award of China Textile Engineering Society, etc.  

Abstract: Electrospun nanofibrous membranes, as the forefront of advanced fibrous materials, hold extraordinary potential applications ranging from environmental, energy to biology owing to their integrated advantages of fine diameter, extremely high aspect ratio, and high porosity. Despite their outstanding potential, the major problem associated with electrospun nanofibers is their anisotropic lamellar deposition character, which leads to the bottlenecks in further improving the thickness and porosity of current electrospun nanofibrous materials. Alternatively, three-dimensional nanofibrous aerogels (NFAs) with both high porosity and excellent compressive resilience might open up the possibility of solving the above problem and expand the applications of electrospun nanofibers; however, creating such NFAs has proven extremely difficult. Herein, we demonstrate a novel strategy to create fibrous, isotropically-bonded elastic reconstructed (FIBER) NFAs with a cellular honeycomb network by combining electrospun nanofibers and the fibrous freeze-shaping technique. The aerogels exhibited low densities of > 0.12 mg cm^-3 and superelasticity. By further regulating the microscopic structures of the aerogels, they could be widely used in the field of sound absorption, warmth retention, and so on. In addition, the superelastic and bendable ceramic nanofibrous aerogels were prepared by using flexible ceramic nanofibers, breaking the mechanical boundaries between ceramics and polymeric materials. The successful synthesis of such fascinating ceramic NFAs will open broad technological implications in thermal insulation, catalyst supports, and flexible electrical devices.

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Abstract: Porous gel materials are multi-component media containing solid skeletons and a large number of interconnected pores. The pore-scale regulation of heat and mass transport properties in porous gel materials is the key to improving their macroscopic properties and realizing engineering applications. Pore-scale numerical simulation can overcome the disadvantages of over-reliance on empirical transport parameters in the method of characterizing unit scale. It can realize the direct simulation of heat and mass transfer, phase transition and nanoparticle transport in complex porous media with multiple morphologies, explain the physical nature of heat and mass transport processes in porous media from the pore level, and realize the multiscale regulation of their macroscopic properties. For example, the effect of pore structure parameters on the effective thermal conductivity, gas effective diffusion coefficient, nanoparticle diffusion coefficient and phase change heat transfer of porous gel materials is explored by pore scale model. This report focus on the pore-scale numerical model and application of the heat and mass transport process in complex porous gel media, and combine GPU parallel accelerated computing technology and machine learning technology to achieve the optimal design of the pore structure of porous media.