第30讲
讲座题目：Biomimetic Design of Carbon Nanomaterials for Gecko-inspired Adhesives
仿壁虎碳纳米粘性材料的设计
演讲嘉宾：夏振海 教授
时间：2015年6月5日上午10：00-11:30
地点：永利集团会议室501室
摘要：Geckos can climb on almost any vertical surface, whether hydrophilic or hydrophobic, rough or smooth. Mimicking this biological system can lead to the development of a new class of advanced adhesives useful in various applications, including climbing robots, reusable tapes, super-grip tires, high efficiency breaks and rapid patch repairs on military vehicles. In this talk, I will present our recent efforts on the development of artificial dry adhesives. Using carbon nanotube arrays that are dominated by a straight body-segment but with curly entangled tip, we have created gecko-foot-mimetic dry adhesives that show macroscopic adhesive forces of ~100 N/cm2, almost ten times of that of a gecko foot. The mimics can be alternatively strong binding-on and easy lifting-off over various substrates for simulating the walking of a living gecko. To understand the underling mechanisms, a multiscale modeling approach was developed by combining large-scale finite element analysis, mesoscale coarse-grained modeling and fully atomic molecular dynamics simulation. Adhesion and friction behaviors of the nanotube arrays under various loading conditions are characterized and compared with experimental data.
简介：夏振海，1990年博士毕业于西北工业大学。现任美国北德州大学（University of North Texas）材料科学与工程系和化学系双聘终身教授。主要研究方向：新能源(如燃料电池,金属-空气电池)催化材料；仿生材料原理及制备；纳米复合材料力学；和多尺度计算材料科学。已发表论文百余篇，其中在Science和Nature子刊等刊物上发表多篇文章，论文总引用次数超过4700次。
联系人：许骏 教授
邮件：junxu@buaa.edu.cn
