Nanostructured graphene metasurface for tunable terahertz cloaking

被引:157
作者
Chen, Pai-Yen [1 ]
Soric, Jason [1 ]
Padooru, Yashwanth R. [2 ]
Bernety, Hossein M. [2 ]
Yakovlev, Alexander B. [2 ]
Alu, Andrea [1 ]
机构
[1] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA
[2] Univ Mississippi, Dept Elect Engn, CAESR, University, MS 38677 USA
基金
美国国家科学基金会;
关键词
D O I
10.1088/1367-2630/15/12/123029
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We propose and analyze a graphene-based cloaking metasurface aimed at achieving widely tunable scattering cancelation in the terahertz (THz) spectrum. This 'one-atom-thick' mantle cloak is realized by means of a patterned metasurface comprised of a periodic array of graphene patches, whose surface impedance can be modeled with a simple yet accurate analytical expression. By adjusting the geometry and Fermi energy of graphene nanopatches, the metasurface reactance may be tuned from inductive to capacitive, as a function of the relative kinetic inductance and the geometric patch capacitance, enabling the possibility of effectively cloaking both dielectric and conducting objects at THz frequencies with the same metasurface. We envision applications for low-observable nanostructures and efficient THz sensing, routing and detection.
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页数:12
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