Terahertz Spectroscopy of Isolated Graphene Flakes Inside Polymer-Based Nanocomposite Samples

被引：0
|
作者：
Koroliov, A. [1 ,2 ]
Staniszewski, Z. [3 ]
Chen, G. [1 ]
Shrestha, R. [1 ]
Laszcz, A. [4 ]
Czerwinski, A. [4 ]
El Fray, M. [3 ]
Richter, C. [5 ]
Sobolewski, Roman [1 ]
机构：
[1] Univ Rochester, 601 Elmwood Ave, Rochester, NY 14627 USA
[2] Ctr Phys Sci & Technol, Semicond Phys Inst, LT-10222 Vilnius, Lithuania
[3] West Pomeranian Univ Technol, PL-70322 Szczecin, Poland
[4] Inst Electr Mat Technol, PL-02668 Warsaw, Poland
[5] Rochester Inst Technol, Rochester, NY 14623 USA
来源：
2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2016年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present transient THz spectroscopy studies of graphene nano-flakes imbedded in a polymer medium, forming a nanocomposite with 1% graphene content. We measured both the pure polymer and nanocomposite transmission spectra extending up to 4 THz and by comparing them obtained the absorption, the complex index of reflection, and conductivity of the embedded graphene. The conductivity results follow the Drude-Smith model with the imaginary part being negative, a property that indicates the total backscattering of carriers within the graphene grains.
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页数：2
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