Seminar 

Artificial Crystal Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences 

A new design to improve bandwidth of piezoelectric energy harvester 

一种增加压电能量收集器带宽的新结构 

Speaker: Prof. Dr. Aydin Dogan 

Materials Science and Engineering Department 

Eskisehir Technical University 

时间：2019年12月19日（周四）下午1：30 

地点：中科院上海硅酸盐研究所（嘉定园区）10号楼2楼会议室 

联系人：梁柱，罗豪甦（021-69987760） 

　　Abstract: This study proposed a unique wideband energy harvester with a spiral metal plate design which has the potential to harvest vibration over a broad range of ambient frequencies. In this design, metal shim with various length was integrated with piezoceramic rings in a spiral form as the cochlea. Spiral form metal shims with various radius leaves were integrated with piezoelectric ceramic. Each metal leaves has its resonance frequency that is slightly different than its neighboring ones. Parametric studies such as split structure, the radius of the metal shim, brass thickness, and tip mass and clamped area were performed to investigated the energy harvester structure. From the results, the buzzer form energy harvesting unit is designed to split leaf form, resonance frequency shifts to lower frequency. In split structure design fro various leaf radius, every leaf keeps their resonance frequencies. This designed structure was resonated on the broader frequency range. Radius difference for neighbor leaves provided wider effective energy harvesting frequency range. Thicker brass shim led to higher stress on piezoelectric ceramic, more significant peak to peak output voltage at own resonance frequency. 

　　报告人简介: 

　　Aydin Dogan教授于1983年，1990年在土耳其中东科技大学获得学士，硕士学位，1994年从宾州州立大学（美国）获得博士学位。2001年至2004年任埃斯基谢希尔科技大学工程学院院长；2006年至2014年任先进技术研究中心主任；2011年至2014年任健康科学研究所研究生院院长。主要研究方向包括压电材料、基于压电材料的传感器、作动器，羟磷灰石基抗菌生物材料等。