Observation of multilayer graphene sheets using terahertz phase contrast microscopy

被引：0
作者：
Liu, Zhikun [1 ]
Xie, Yanan [1 ]
Geng, Li [1 ]
Pan, Dengke [1 ]
Song, Pan [1 ]
机构：
[1] Shanghai Univ, Sch Commun & Informat Engn, Key Lab Specialty Fibre Opt & Opt Access Networks, Shanghai 200072, Peoples R China
来源：
PRAMANA-JOURNAL OF PHYSICS | 2017年 / 88卷 / 01期
关键词：
Graphene; terahertz radiation; surface conductivity; phase contrast microscopy; transmission function; ANTENNA;
D O I：
10.1007/s12043-016-1308-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Although it is important for the study of graphene, identifying and characterizing the number of graphene layers is challenging. In this paper, we calculate graphene's transmission. The result shows that the phase change is more sensitive than the intensity change when light passes through graphene in some THz frequencies. Based on this fact, a simple route is presented for identifying the single or few layers of graphene sheets by using terahertz phase contrast microscopy (TPCM). The route is fast, and easy to be carried out.
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页数：5
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