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(11.9)应用所科技大讲堂第三期:王中林 院士

文章来源: 发布时间: 2017-11-07

  报告人:王中林 院士

  报告题目:From Maxwell’s displacement current to nanogenerator driven self-powered systems and blue energy 

  报告地点:应用技术研究所三楼报告厅

  报告时间:2017119日下午2

  主持人:田兴友 研究员

  报告人简介:

 

  王中林,现为中科院北京纳米能源与系统研究所所长和首席科学家、中科院外籍院士、欧洲科学院院士、佐治亚理工学院终身校董事讲席教授、Hightower终身讲席教授;他是中组部首位“千人计划”顶尖人才和团队项目入选者、北京市首位“海聚工程”战略科学家、教育部长江学者讲座教授、中国首批国家自然科学基金会海外优秀青年科学家基金获得者。

  王中林院士首次发明了纳米发电机和自驱动纳米系统技术。他发明压电纳米发电机和摩擦纳米发电机,提出自驱动系统和蓝色能源的原创大概念,将纳米能源称为“新时代的能源”。在国际一流刊物上发表1300多篇论文(其中发表在《科学》、《自然》及其子刊上的文章40余篇),拥有200项专利、7部专著和20余部主编书籍、会议文集。他的学术论文已被引用11.5万次以上,被引用H因子(h-index)167。同时,他还是国际纳米能源领域著名刊物 Nano Energy 的发刊主编和现任主编。

  王中林院士先后在美国和国际上获得各类重大奖项15次,比如2015年获得汤森路透引文桂冠奖,该奖项被称为诺贝尔奖风向标,并获得2015年度诺贝尔物理学奖提名。王中林院士还是美国物理学会、科学发展协会、材料学会、陶瓷学会、显微学会会士和英国皇家化学学会会士,担任世界多所著名大学和科研机构担任客座教授或名誉教授。

  报告摘要:

  Self-powered system is a system that can sustainably operate without an external power supply for sensing, detection, data processing and data transmission. Nanogenerators (NG) were first developed for self-powered systems based on piezoelectric effect and triboelectrification effect for converting tiny mechanical energy into electricity, which have applications in internet of things, environmental/infrastructural monitoring, medical science, environmental science and security. Here, we first present the fundamental theory of the NGs starting from the Maxwell equations. In the Maxwell’s displacement current, the term E∂E∂t gives the birth of electromagnetic wave, which is the foundation of wireless communication, radar and later the information technology. Our study indicates that, owing to the presence of surface polarization charges present on the surfaces of the dielectric media in NG,an additional term ∂Ps∂tshould be added in the Maxwell’s displacement current, which is the output electric current of the NG. Therefore, our NGs are the applications of Maxwell’s displacement current in energy and sensors. NGs have three major application fields: micro/nano-power source, self-powered sensors and blue energy. We will present the applications of the NGs for harvesting all kind mechanical energy that is available but wasted in our daily life, such as human motion, walking, vibration, mechanical triggering, rotating tire, wind, flowing water and more. Then, we will illustrate the networks based on triboelectric NGs for harvesting ocean water wave energy, for exploring its possibility as a sustainable large-scale power supply. Lastly, we will show that NGs as self-powered sensors for actively detecting the static and dynamic processes arising from mechanical agitation using the voltage and current output signals.

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