題目：Fabrication of high-performance piezoelectric PVDF nanocomposite and evaluation of its sensing and energy harvesting properties

報(bào)告人：胡寧教授（重慶大學(xué)航空航天學(xué)院院長(zhǎng)）

時(shí)間：2018年11月2日下午16:30

地點(diǎn)：明故宮校區(qū)A18-526

主辦單位：機(jī)械機(jī)構(gòu)力學(xué)及控制國(guó)家重點(diǎn)實(shí)驗(yàn)室、科協(xié)、航空宇航學(xué)院

報(bào)告內(nèi)容簡(jiǎn)介：

With the rapid development of electronics industry, the power consumption of portable devices decreases significantly, thus self-power devices become feasible. Moreover, in some special situations, replacement of batteries is not convenient or costly. As a result, the energy harvesting devices have attracted much attention in recent decades. In addition, in traditional precision device industry, high-performance strain sensors are a crucially important component. Therefore, materials with both sensing and energy harvesting functions are very attractive. Piezoelectric PVDF (Poly(vinylidene fluoride)) is a promising candidate due to its various merits, such as non-toxicity, high flexibility, recyclability, and high resistance ability to halogen, acid and fatigue, etc. In this study, we prepared PVDF nanocompositesusing three kindsofnanofillers by solution casting method, i.e., carbon nanotubes, graphene and carbon black. We obtainedtheimprovedpiezoelectricity of the PVDF nanocomposites which may have potential applications in the field of sensors and energy harvesting devices. The improvement mechanisms of piezoelectricity were explored in detail.

報(bào)告人簡(jiǎn)介：

胡寧，男，53歲，重慶大學(xué)航空航天學(xué)院院長(zhǎng)，教授，博士生導(dǎo)師，杰青（B類(lèi)）。1981-1991年在重慶大學(xué)完成本科-博士教育，他先后在日本東北大學(xué)、清華大學(xué)、Johns Hopkins、日本千葉大學(xué)等歷任助理教授-教授，2013年回國(guó)時(shí)任日本千葉大學(xué)教授、機(jī)械系主任、人工系統(tǒng)科學(xué)專(zhuān)攻長(zhǎng)。科研方面，他長(zhǎng)期從事計(jì)算固體力學(xué)、功能?結(jié)構(gòu)納米復(fù)合材料、結(jié)構(gòu)和材料無(wú)損檢測(cè)和實(shí)時(shí)監(jiān)控技術(shù)等研究，指導(dǎo)博士生近20名、碩士生50余名，取得了不少創(chuàng)新性成果。他出版英文書(shū)籍3部；申請(qǐng)和獲批中日專(zhuān)利約20項(xiàng)；發(fā)表期刊論文300余篇，其中SCI論文240篇，論文被引用數(shù)6000次，H-Index為38(SCOPUS數(shù)據(jù)庫(kù)) ，連續(xù)4年入選中國(guó)學(xué)者高被引榜單（2014-2017）