应用力学在微纳米力学、细胞力学中的研究进展
讲座名称:
应用力学在微纳米力学、细胞力学中的研究进展
讲座时间:
2014-03-20
讲座人:
刘益伦/沙振东/徐光魁
形式:
校区:
兴庆校区
实践学分:
讲座内容:
国际应用力学中心系列讲座- 刘益伦、沙振东、徐光魁
主题:应用力学在微纳米力学、细胞力学中的研究进展
时间:2014年3月20日(周四)下午4:00-5:30
地点:教一楼南二层第五会议室
报告1:刘益伦博士,国际应用力学中心 Tenure-track PI
讲座人简介:
2005年本科毕业于清华大学;2011年博士毕业于清华大学。2011-2013年于美国哥伦比亚大学从事博士后研究。2013年加入西安交通大学国际应用力学中心任副教授。研究方向:纳米复合材料、轻质多孔材料的多尺度力学模型及其应用,多级材料的动态力学行为。相关研究工作发表在《J. Mech. Phys. Solids 》、《Phys. Rev. Lett.》等顶级学术期刊。
Abstract:
Mechanical behavior and energy absorption of microlattice structures
Developing high performance energy absorption materials and structures (EAMS) has been a focal point of research in recent years. Hierarchical structures usually exhibit excellent mechanical performance, example such as biomaterials bone, nacre shell, and ancient fish armor. Besides, the nanoporous materials have extremely large specific surface (~103m2/g) which hold great potential applications in the energy absorption. Recently the hierarchical microtruss lattice structures proposed by Jacobsen et al. (2008) hold great promise in the energy absorption. They can be designed at three levels hierarchy: unit cell (symmetry, size, etc) hollow tube (diameter, wall thickness, node geometry) and hollow-tube wall (micro-structure, composition, multilayer). They are well connected which is especially suitable for sealing nanoporous materials functionalized (NMF) liquid.
Our works focus on optimizing the microstructure, topological collection, stacking arrangement and materials of the microlattice structures to maximize their energy absorption. Then the NMF liquid is introduced to the cellular structures to construct high performance energy absorption system. A general rule is proposed to satisfy different requirements for different applications of the microlattice light weighted structures.
报告2:沙振东博士,国际应用力学中心 Tenure-track PI
简介:
A/P Dr. Zhendong SHA
2006-2010 Ph.D., National University of Singapore, Singapore
2010-2011 Research Engineer, Institute of High Performance Computing, A*STAR, Singapore
2011-2013 Research Scientist, Institute of High Performance Computing, A*STAR, Singapore
Research Interests:Nanomechanics of functional materials
Publications in SCI
Number: 40
Average Citations per Item: 12
h-index: 12
Abstract:
In order to improve the plasticity of metallic glasses, a new type of metallic glass architecture referred to as nanoglass has been recently proposed. In my work, I aim to design the strong-and-ductile nanoglass with the architectured atomic structures.
The controlling factors and the grain size-dependence of the breaking strength of polycrystalline graphene are, to date, still highly controversial both experimentally and theoretically. In my work, I aim to provide insights into controlling the mechanical properties of polycrystalline graphene and serves as a guideline for the applications of polycrystalline graphene in flexible electronics and nano-electronic-mechanical devices.
报告3:徐光魁博士,国际应用力学中心 Tenure-track PI
简介:分别于2006年和2011年在西安交通大学工程力学系、清华大学工程力学系获学士学位和博士学位。2011年-2013年,在德国马普胶体与界面研究所做博士后,合作导师为Reinhard Lipowsky教授(德国柏林-勃兰登堡科学院院士)。2014年1月,加入西安交通大学国际应用力学中心,任Tenure-track PI。主要从事生物力学和微纳米力学领域的工作,包括细胞黏附、组织形貌演化、高分子与纳米颗粒自组装等方面。曾获首届“教育部博士研究生学术新人奖”,在《Soft Matter》、《Nano Research》、《J. Phys. Chem. B》、《Appl. Phys. Lett》、《Phys. Rev. E》、《J. Biomech》等期刊上发表多篇SCI文章。
Abstract:
Statistical Mechanics Modeling in Biophysics and Soft matter
统计力学在生物物理和软物质领域都有着广泛的应用。通过统计力学建模,可以帮助我们更好地认识和研究相关领域的实验现象,并揭示这些现象背后的物理机理。本报告将以细胞黏附、高分子与纳米颗粒自组装为例来讲解如何使用统计力学进行建模。相关研究涉及分子生物力学、生物物理和物理化学等多个学科。
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