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软材料力学:水凝胶和细胞骨架
报告人:钱劲 教授(浙江大学)
时间:2017年5月22日下午3:30
地点:力一楼227会议室
Fracture Mechanics of Soft Dissipative Materials
报告人:龙荣 助理教授 University of Colorado Boulder
时间:2017年5月18日(星期四)下午 2:30
地点:力一楼427会议室
Multifunctional composites and coatings through microencapsulation approaches
报告人:杨晶磊教授 香港科技大学
时间:2017年4月18日(星期二)上午10:30
地点:力一楼227会议室
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Experimental Mechanics of Low-Dimensional Nanomaterials

( 2017-05-21 )

  

  

  报告人:Dr. Yong Zhu North Carolina State University (NCSU)<br />

  时间:2017年5月26上午10:00-11:00<br />

  地点:力一楼239会议室

  A wide variety of low-dimensional nanomaterials such as nanotubes, nanowires and 2D materials with outstanding mechanical properties have been developed in the past decades. Measuring their mechanical properties and understanding their deformation mechanisms is of important relevance to many of their device applications. On the other hand, such nanomaterials can provide an unprecedented platform for probing mechanics at the nanoscale. While challenging, the field of experimental nanomechanics has emerged and seen exciting progress in the past decade. Here I will summarize recent advances in this field, highlighting in-situ experimental methods using atomic force microscope and electron microscopes. A promising method is based upon microelectromechanical systems (MEMS). I will present an innovative MEMS-based method for in-situ scanning and transmission electron microscopy (SEM/TEM) mechanical testing of crystalline nanowires. Then I will discuss the mechanics of crystalline nanowires including elasticity, fracture, plasticity and anelasticity, as well as some applications of crystalline nanowires such as flexible and stretchable electronics, energy harvesting and storage, and strain engineering, where mechanics plays a key role. Following crystalline nanowires, I will discuss briefly testing methods and mechanics of 2D materials focusing on the interface mechanics. This talk will conclude with a perspective of experimental mechanics of low-dimensional nanomaterials.

  Biosketch:

  Dr. Yong Zhu is Professor and University Faculty Scholar in the Department of Mechanical and Aerospace Engineering (affiliated in Materials Science and Engineering and Biomedical Engineering) at North Carolina State University (NCSU). He received his B.S. degree from the University of Science and Technology of China, and his M.S. and Ph.D. degrees from Northwestern University. After a postdoc position at the University of Texas at Austin, he joined NCSU in 2007 as an Assistant Professor and was promoted to Associate Professor in 2013 and recently to Professor in 2017. His group conducts research at the intersection of solid mechanics and micro/nano-technology, including nanomechanics, microelectromechanical systems and stretchable/wearable electronics. He has received several awards including College of Engineering Alcoa Foundation Research Achievement Award, Society of Experimental Mechanics Young Investigator Lecture Award, ASME Sia Nemat-Nasser Early Career Award, and Eshelby Mechanics Award. He is an Associate Editor of Experimental Mechanics and Editor of iMechanica Journal Club, and serves in the executive committee of the Materials Division at ASME.

  


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