行健讲坛学术讲座

第 387 期

时间:  2019年5月9日（周四）下午2:00-3:30

地点:  校本部东区翔英楼T516室

讲座:  基于碳纳米材料的电磁器件和应用

演讲者:  何国强 博士，布鲁塞尔自由大学客座教授

演讲者简介：何国强，比利时布鲁塞尔自由大学（VUB）电子与信息学院客座教授/博士；2019年1月在布鲁塞尔自由大学获电子工程专业博士学位并获得博士最高荣誉；2013-2017年，布鲁塞尔自由大学助教，2017-2018年布鲁塞尔自由大学研究员，2019年起任布鲁塞尔自由大学客座教授；发表国际期刊和会议文章30多篇，作为章节作者合著书一本。 主要研究方向为碳纳米功能材料，毫米波、太赫兹技术，计算电磁学。

Abstract: Carbon nanomaterials, such as carbon nanotube and graphene, have attracted substantial interest in the electromagnetic domain due to their excellent electronical properties. The previous studies were mainly focusing on high frequencies, such as terahertz (THz), infrared, and optical frequencies. However, the carbon nanomaterials also show potential applications in the microwave, millimeter wave, and sub-THz frequency domains. In this report, the presenter will mainly introduce his research work on graphene and carbon nanotube for the frequencies below 1 THz in the millimeter wave and THz lab of Vrije Universiteit Brussel. Numerical method finite-difference time-domain (FDTD) modelling graphene is firstly introduced. With the numerical method, electromagnetic modulation properties of graphene in waveguide structures and free-space are investigated in the millimetre wave and sub-THz frequencies. Two practical electromagnetic applications utilizing the electromagnetic modulation properties are presented later. In the last, the research work on another carbon nanomaterial—carbon nanotube is demonstrated, which is identifying the anisotropy in seemingly random carbon nanotube networks with THz technique. This investigation shows the potential application of THz technique on characterization of nanomaterials.

邀请人：上海大学通信与信息工程学院 杨雪霞教授

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