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2016-2017学年第一学期航空航天系第十一期学术讲座
发表时间:2016-12-28 阅读次数:462次

题目:Design and Optimization of Piezoelectric System for Vibration Energy Harvesting and Wave Guiding

主讲:Dr. Jiawen Xu (徐佳文)

主持:陈力奋 副教授

时间:2016年12月27日(周二)下午2:00

地点:光华楼东主楼2517室

 

教授简介

Dr. Jiawen Xu is research assistant of Mechanical Engineering at University of Connecticut. He received his B.E. and M.S. degree in Precision Instrumentation from University of Science and Technology of China in 2009 and 2011, respectively, and Ph.D. degree in Mechanical Engineering from University of Connecticut. His research interest includes piezoelectric energy harvesting, instrumentation and acoustic metamaterials.

内容简介

Piezoelectric materials are widely investigated in fields of sensing, energy harvesting and wave propagation. Much attention is paid in the area of energy harvesting due to the high power-density and capability of easy integration of piezoelectric transducers. In this presentation, a general framework is demonstrated for vibration energy harvesting. Optimizations are performed of piezoelectric energy harvesters in aspects of improving power density, increasing electro-mechanical conversion efficiency and enabling multi-directional energy harvesting.  Theoretical analysis and experimental studies are presented to demonstrate the underlying physics and illustrate the performances of the proposed systems.  Moreover, piezoelectric materials play important role in the rising field of acoustic metamaterials. The working principle of piezoelectric acoustic metamaterials is illustrated. Investigations of piezoelectric metamaterials are presented. The piezoelectric metamaterials can be further applied for continuous acoustic wave steering.

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