Keynote Speakers

Prof. Zishun Liu

 Xi'an Jiaotong University, China

Experience: Prof. Zishun Liu is a Professor at Xi’an Jiaotong University (XJTU) and Executive Director of the International Center for Applied Mechanics. He is also the General Secretary of Int. Association of Applied Mechanics (IAAM) and the Honorary President of the Singapore Association of Computational Mechanics. He is a Fellow of Int. Association of Applied Mechanics, Fellow of the International 

Association of Advanced Materials, and SACM fellow. He served on the faculty of XJTU between 1986 and 1994, as a Senior Scientist, Capability Group Manager at the Institute of High-Performance Computing, Singapore (IHPC), and Associate Professor of NUS at various points from 1999 to 2012. As a visiting scientist, he worked at the Max Planck Institute for Metals Research, Stuttgart, Germany, and the University of Glasgow, the UK in 2005 and 2006 respectively. His research interests are in the areas of Mechanics of Soft Materials, Computational Solid Mechanics & Biomechanics, Nanomechanics, and Vibro-Acoustic. He has published more than 200 SCI-referred research papers and many of his research articles were awarded Most Cited Author Award. Now he also holds Adjunct Professorships at NUS.

Prof. Liu is an active member of various leadership roles in editorial boards and professional communities as follows: Dr. Liu is an Editor-In-Chief of Int. Journal of Applied Mechanics and Int. Journal of Computational Materials Science and Engineering, and Editor of Journal of Mechanics of Material and Structures, Associate Editor of Journal of Applied and Computational Mechanics. He also serves on the editorial boards of IJCM, IJSSD, AMS, AMSS, etc.. As a Chairman, Dr. Liu has organized more than 20 Int. Conferences in the field of computational mechanics & applied mechanics.

Research area: Soft matter mechanics; Computational mechanics; Nanomechanics; Vibration noise.

Personal Web: http://www.zsliu.net/    http://gr.xjtu.edu.cn/web/zishun

Title: Advances in Mechanics of Soft materials – New Smart Hydrogels

Abstract: Hydrogels are widely used in flexible electronics and biomedicine fields because of their excellent large deformation characteristics and very good biocompatibility. Recently, we carried out a series of experiments on polyacrylamide hydrogels with a wide range of water content and reveal that the physical adhesion properties of hydrogels are related to the water content. We find that with a variation of water content, the adhesion energy-water content relationship can be divided into four regions. For double-network (DN) hydrogels, we developed a quantitative framework to decompose the fracture toughness and feature size of the crack-tip field. Through extensive tearing tests, we propose an exponential function to describe the relationship between the apparent fracture energy and free width. The study reveals the physical inconsistencies in some opinions about DN gel fracture and resolves some paradoxes on the toughness of DN gels. Furthermore, through extensive experiments on polyacrylamide gel, we discover scaling-laws that differ significantly in the swollen and dehydrated state in addition to contradicting F-R model. In this talk, I will discuss some paradoxes in the description of mechanical properties and fracture toughness of hydrogels Finally, the recent advances about hydrogel will be discussed in this talk.

Prof. Dongfeng Xue

Shenzhen Institute of Advanced Technology，Chinese Academy of Sciences

Experience: Director of Multi-scale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Professor of Scientific Research, School of Materials, Shenzhen University of Technology, National Jie Qing, doctoral supervisor. Member of National New Materials Industry Development Expert Advisory Committee, Member of New Materials Department of Expert Committee of China Building Materials Federation, Member of Royal Society of Chemistry. He has won the first prize of Natural Science of Hunan Province, the first prize of Science and Technology Progress of Shandong Province, and the first prize of natural Science of Chinese Granular Society. He is the director of rare Earth Crystal Special Committee of Rare Earth Society of China, the deputy director of Inorganic acid, base and salt special Committee of Chemical Society of China, and the editorial board member of several periodicals such as deputy editor of CrystEngComm.
Research area: New crystal materials and energy storage technology

Title: Multiscale origin of crystal materials

Abstract: The key science of crystal materials research is their multi-scale origin. The components (e.g., chemical species) of materials system go through different states, such as atoms/ions/molecules, clusters, nucleation and further crystal growth, correspondingly, both thermodynamics and kinetics of materials system have significant/clear scale-dependent effects. In this report, I will summarize our team’s recent research progresses in large-size crystal growth and crystal hardness, from the degrees of freedom such as ion electronegative scale and cluster structure. Hopefully, this talk may stimulate innovation work in the field of novel crystal materials.

Researcher Shaowen Cao (H-index: 50)

Experience: Professor of the State Key Laboratory of New Materials Composite Technology, Wuhan University of Technology, doctoral supervisor, winner of the National Science Fund for Outstanding Young People. In 2019, he was supported by the National Science Foundation for Outstanding Young People, and in 2018, he was selected to the list of "Global Highly Cited Scientists" by Kerivian. In 2017, he was supported by the Outstanding Youth Foundation of Hubei Province. In 2016, he was selected to the "Young Top-notch Talent" of Wuhan University of Technology, and in 2014, he was selected to the Chutian Student level of Hubei Chutian Scholars Program.

Research area: Energy photocatalytic materials

Title: Two-dimensional hybrid photocatalysts

Abstract:Excessive consumption of fossil fuels is the key contributor to climate change. Solar-powered artificial photosynthetic conversion of CO2, potentially direct from diluted sources, into value-added products is considered as a promising strategy to alleviate the problem. The exploitation of low-cost, sustainable, and highly active photocatalysts is critical to improve CO2 photoreduction for practical applications. Hybrid photocatalytic systems on the basis of two-dimensional (2D) materials have shown great potential in this field. Constructing an interface with intimate contact and strong interaction is of vital importance for achieving highly efficient 2D material-based hybrid photocatalytic systems, which essentially promoting the charge transfer across the interface. Herein, we introduce the rational design of 2D material-based hybrid photocatalytic systems via various strategies. (1) Carbon nitride/single-atom metal 2D/0D systems are constructed via strong coordination, which establishes directional charge transfer channels through a built-in electric field and enhances the photocatalytic CO2 reduction and H2 production. (2) Polymer/quantum dot 2D/0D systems are constructed via electrostatic adsorption–in situ growth, which generates interfacial electric field to promote charge transfer across the interface for enhanced photocatalytic inactivation of bacteria and H2 production. (3) Graphene/crystalline carbon nitride 2D/1D system is constructed via dissolution-recrystallization–in situ growth, which shows remarkable improvements of light absorption, exciton splitting, and charge transport, enabling the efficient photochemical reduction of wet CO2 in the gas phase and without any sacrificial agent.

Prof. Xiaopeng Li, Shenzhen University

Experience: Recipient of the National Natural Science Foundation of China Outstanding Youth Foundation. In 2019, the Cram Lehn Pedersen Prize in supramolecular Chemistry, named after three 1987 Nobel laureates in Chemistry, was awarded by the Royal Society of Chemistry for "highly original and independent work" (1 person per class). Other honors and awards include: Cottrell Scholar Award (2015), Outstanding Young Professors Award of Sino-American Chinese Professors Association of Chemistry and Chemical Biology (2017), Fellow of the Royal Society of Chemistry (2017), Shenzhen Outstanding Young Scholars Foundation (2020), National Natural Science Foundation of China Outstanding Young Scholars Foundation (2021), Chinese Chemical Society Supramolecular Chemistry Youth Innovation Academic Lecture Award (2021).

Research area: Development and characterization of mass spectrometers, coordination bond self-assembly supramolecular chemistry and supramolecular materials

Title: Characterization of Synthetic Macromolecules by Mass Spectrometry and STM

Abstract: The characterization of complex macromolecules by conventional techniques is challenging due to the consistence of byproducts, tedious purification and multiple conformations of large molecular architectures. During the past 10 years, our lab focused on the characterization of complex synthetic macromolecules using multidimensional mass spectrometry and scanning tunneling spectroscopy, which enable the constructing of large molecular structures with high precision. In terms of mass spectrometry, we first modified commercial mass spectrometer to minimize the fragmentation of macromolecules and provide high resolution mass spectra. Then, ion mobility mass spectrometry was applied to obtain the size and shape information of macromolecules. Moreover, we elucidated the stability of macromolecules using tandem mass spectrometry. In contrast, STM is able to directly visualize the structure of macromolecules. Using solution deposition and glass fiber transfer, we characterized a series of supramolecules and supramolecular polymers. Finally, the kinetic and thermodynamic features of coordination-driven self-assembly as well as the conformation of single polymer chain were also explored by STM. In summary, multidimensional mass spectrometry and scanning tunneling spectroscopy do not simply act as an analytical method, but also serve as a powerful tool to assist the development of new synthetic chemistry and materials science.

Prof. Jixin Zhu, University of Science and Technology of China

Experience: PhD in Materials Science and Engineering, Nanyang Technological University (2012), Postdoctoral Fellow at TUM CREATE, Nanyang Technological University (2012-2014), Visiting Scholar at Rice University (2012-2013), Postdoctoral Fellow at Max Planck Institute of Colloid and Interface (2014-2015), Professor of Nanjing University of Technology (2016-2021), Special Professor of University of Science and Technology of China (2022-present).

Research area: Theory of new energy storage and safety electronics, energy storage device chip design and intelligent system, flexible safety electronic sensor parts and technology, intelligent fire protection technology and fire safety monitoring

Title:Lithium batteries high performance storage and thermal safety protection

Abstract:With great development of electric vehicles, flexible electronics and mobile electronic devices, we need to develop energy storage materials and their devices for high-performance lithium batteries. However, the structure collapse of electrode materials and reaction heat accumulation during long-term working conditions will cause performance failure and thermal runaway. The persistent thermal accumulation reaction during the fire will cause continuous thermal runaway and sudden explosion. How to realize the high-performance storage and thermal disaster prevention in working conditions that is still a big challenge for lithium batteries. Focusing on the "lithium battery life cycle safety mechanism", we work on the energy storage materials synthesis, energy storage devices preparation, energy storage safety mechanism and thermal runaway monitoring.

Prof. Jiangwei Wang, Henan Academy of Sciences

Experience: Distinguished Researcher, Doctoral supervisor, Institute of Materials, Henan Academy of Sciences. Doctor and postdoctoral fellow at the University of Pittsburgh, Visiting scholar at Sandia National Laboratory and Pacific Northwest National Laboratory. Young editorial member of Tungsten, Materials Engineering, Journal of Aeronautical Materials, Nature Communications, Science Advances, Acta Materialia, Advanced Energy Materials, Nano Energy, Nano Letters and more than 20 journal reviewers. In recent years, Successively in Nature, Nature Materials, Nature Nanotechnology, Nature Communications, Science Advances, Nano Letters, Advanced He has published more than 80 papers on well-known journals such as Materials and Acta Materialia, written long reviews for many well-known journals in the field of materials and mechanics, and made more than 40 invited reports on academic conferences at home and abroad. He cited papers more than 5,000 times.

Research area: 

1. Structure and properties of metallic materials, 

2. Multi-scale mechanical behavior and damage fracture of materials, 

3. In situ Nanomechanics, 

4. Reaction mechanism and damage mechanism of energy storage materials, 

5. In situ transmission electron microscopy

Title: Electroplastic origin and pulse regulation of metallic materials

Abstract: Structural and functional metallic materials are widely used in key fields such as ultra-high voltage electrical components, high energy electromagnetic devices, high frequency/high power electronic devices, micro and nano chips. Their service process involves the structural changes under the action of high-energy electrical pulses,and theresultant physical properties changes, plastic deformation or structural damage. However, their microscopic origin is still controversial. In this report, we systematically studied the mechanism of pulsed electric field on the internal structure and defects of materials by means of the electropulse testing method under in-situtransmission electron microscopy. Based on the unique migration behavior of the non-coherent twin boundary, we explained the microscopic origin of the electroplasticity of materials. Combined with quantitative calculation, we found that the electron-dislocation interaction dominated the electroplasticity of materials, rather than thecommon-believed electron-wind effect. Using this mechanism, the structural inhomogeneity regulation and brittlenessto toughness transformation of metallic glass are achieved successfully. These findings provide theoretical support for the electrical pulse modification of metallic materials and the reliability design of micro and nano devices.

Prof. Guiyin Li

Guangdong University of Petrochemical Technology, China

Experience: Doctor of Engineering, professor, Clinical medicine/Pharmacy double postdoctoral, doctoral supervisor, Guangdong University of Petroleum and Chemical Technology second-level professor. He is mainly engaged in the research of bioelectric analysis, biomedical sensing, nano-targeted drug diagnosis, and treatment. He has presided over 2 National Natural Science Foundation projects and 7 provincial and ministerial-level projects. He has won 3 Guangxi Science and Technology Progress Awards and Invention Awards, Hunan Province "Furong Hundred Gang Star", Hunan Province ordinary colleges and universities Backbone teacher, and other honorary titles. She has published more than 60 SCI scientific research papers. It has applied for 45 national invention patents and authorized 22.

Research area: Photoelectric materials chemistry; Fine utilization of low-value petrochemical resources

Personal Web: https://www.gdupt.edu.cn/hxxy/info/1065/1532.htm

Assoc Prof. Yabin Yang, Sun Yat-Sen University, China

Experience: Associate Professor, Ph.D. supervisor, Sun Yat-sen University. He graduated from Huazhong University of Science and Technology with a bachelor's degree in Material forming and control and graduated from Tsinghua University with a doctorate in Mechanical Engineering. During his doctoral studies, he visited Korea Advanced Technology Institute and the University of Virginia. After his PhD, he worked as a postdoctoral fellow at the Delvota University of Technology in the Netherlands. After the postdoc. He entered Sun Yat-sen University through talent introduction and has been working there ever since.

Research area: Structural material design and material forming

Personal Web: https://mse.sysu.edu.cn/teacher/180

Title：Fast and accurate predition of the residual stresses and deformations in metal additive manufacturing

Abstract：Residual stresses and deformations, which greatly afftect the precision and processing quality of the additively manufactured metal part, are one of the most important challenges. Finite element method plays an important role in predicting the residual stresses and deformations to reduce the experimental costs, and provides a powerful tool for the optimization of process parameters and scanning strategies of heat source. However, the key problem in simulation is the mismatch between the melt pool and the built part in both spatial and temporal scale. This would result in large discretization in both spatial and temporal domains in the simulation, which gives rise to huge computational cost. Therefore, it is necessary to develop a computationally efficient and accurate model in predicting the residual stresses and deformations of the metal additive manufacturing part. A thermo-mechanical model based on a superposition law in the thermal calculation is proposed in the present study. The proposed model enables to solve the mismatch of spatial scale in metal additive manufacturing and is capable of describing various types of heat sources such as point, surface and volumetric heat source. In addition, a plug-in was also developed based on Abaqus to quickly construct the numerical model. Based on these work, a novel approach termed as modified inherent strain method with various mechanical properties is also constructed, which avoids the direct and complex description of the additive manfucaturing process, and just incorporates the influence of the process parameters in to the modified strain, which would be used as the input in the model. Hence, this model has much higher computational efficiency without sacrificing the accuracy, and is promising for the optimization of process parameters. Corresponding experimental restuls were also employed to validate the accuracy of the proposed approaches.