Post buckling analysis and its applications on stretchable electronics and micro assembly structures

作者:时间:2018-09-26浏览:213供图:审阅:来源:南京航空航天大学

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题目:Post buckling analysis and its applications on stretchable electronics and micro assembly structures

时间:2018925日(星期二)下午1500

报告人:师岩副研究员(南京航空航天大学航空宇航学院)

地点:明故宫校区A18-209会议室

主办单位:机械结构力学及控制国家重点实验室、航空宇航学院、航空航天交叉研究院

报告摘要:

    Inorganic stretchable electronics is an emerging technology involving electronic components and circuits integrated on the soft elastomer substrate to form the functional device with excellent stretchability. Along with the development of the multidisciplinary science, stretchable electronics has exploited many significant applications in biomedicine, nanotechnology, communications and customer electronics. Some emerging technologies and products such as stretchable circuits, transfer printing, electronic eye cameraand flexible battery. The development of the emerging technologies, such as stretchable electronics poses challenges to micro fabrications. The recently reported technology that combines micro fabrication with origami Kirigami art builds an emerging technology for autonomic origami assembly of 3D structures across material classes from soft polymers to brittle inorganic semiconductors, and length scales from nanometers to centimeters.

    Structure buckling plays an important role in design and fabrication of the stretchable electronics. In design of “island bridge structure”, the deformations are mainly undertook by the buckled interconnects, which induces the excellent stretching bending properties of the whole devices. In the area of buckling induced origami assembly of 3D structures, the buckling behavior of structures also plays an important role in assembling process and final configurations. Many papers have been published on the research of elastic buckling behaviors of semiconductor or high polymer membranes. But little research has done on the elastic-plastic buckling behavior of metallic film structures and its influence on the configurations of 3D structures.

    Faced with these problems, in current work, the buckling behaviors in designs and fabrications of flexible plasmonics and three dimensional assembly of metallic film structures are studied. We focus on the relevant problems of buckling behavior which include mechanics analysis, post-buckling configurations and structure optimizations.

Keywords: Flexible electronics, Self-assembly, Post-buckling, Optimization design

报告人简介:

    师岩,航空航天交叉研究院副研究员。于2009年和2015年在南京航空航天大学分别获得学士和博士学位。曾在美国西北大学交流访问两年,并于博士毕业后在清华大学固体力学博士后工作站工作两年,于2017年进入交叉研究工作,2018年入选南京航空航天大学“长空学者”人才计划。研究领域包括智能材料断裂力学、柔性电子器件的力学建模、微/纳尺度折纸结构等。师岩副研究员共发表期刊论文30余篇,SCI收录22篇。其中包括CellNature MaterialsNature CommunicationsPNAS等国际顶尖期刊论文。