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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：光电工程与仪器科学学院院长、党委副书记
其他任职：辽宁省先进光电子技术重点实验室副主任，大连市新型功能材料与光电子器件重点实验室主任，中国超材料学会理事，中国机械工程学会极端制造分委员会委员，国际先进材料学会会士，Microsystems&Nanoengineering、chemosensors等期刊副编辑
性别：男
毕业院校：布里斯托尔大学
学位：博士
所在单位：光电工程与仪器科学学院
学科：光学工程. 电磁场与微波技术. 光学. 测试计量技术及仪器. 精密仪器及机械
办公地点：研教楼706
联系方式：0411-84706156
电子邮箱：caotun1806@dlut.edu.cn
Simulation of tunable metamaterial perfect absorber by modulating Bi2Se3 dielectric function
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论文类型：期刊论文
发表时间：2016-02-01
发表刊物：MATERIALS EXPRESS
收录刊物：SCIE、Scopus
卷号：6
期号：1
页面范围：45-52
ISSN号：2158-5849
关键字：Metamaterials; Perfect Absorber; Surface Plasmons; Tunable; Topological Insulator; Dielectric Function; Simulation
摘要：We numerically present an effective method for tuning the intrinsic resonance of metamaterial perfect absorber by taking advantage of phase transition in a topological insulator (bismuth selenide, Bi2Se3) in the near-infrared (NIR) region. The design consists of an array of square Au rods separated from a continuous Au film by a Bi2Se3 dielectric interlayer. It is shown that a large shift of 280 nm in the resonance wavelength can be obtained by switching Bi2Se3 between its trigonal and orthorhombic states. The strong absorbance shows a substantial overlap between TE and TM polarization states over a wide range of incident angles.