Design of an ultrabroadband visible metamaterial absorber based on three-dimensional metallic nanostructures

Author:

Luo Hao1,Cheng Yong Zhi2

Affiliation:

1. College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

2. School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

Abstract

We present the design and numerical simulations of an ultrabroadband visible metamaterial absorber (MMA) with polarization-insensitive and wide-angle based on three-dimensional (3D) metallic nanostructure. Distinct from previous designs, the proposed visible MMA only consisted of structured 3D metallic film constructed with an assembly of four vertical split-rings (FVSR) structure. For the optimized design of our MMA, the absorbance of over 90% with a relative bandwidth of 94.8% can be obtained. Further simulation results indicate that our design is polarization-insensitive and also operated well in a wide range of incident angles for both TE and TM modes. In addition, the designed visible MMA design can tolerate some geometric parameters errors in fabrication. Thus, the proposed visible MMA can be potential application in the photodetectors, thermal imaging, photoelectrochemical, and solar energy harvesting devices.

Funder

the National Natural Science Foundation of China

the Science and Technology Program of Henan, China

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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