All-graphene perfect broadband THz absorber

Ultrafast graphene-based broadband THz detector

A perfect absorber made of a graphene micro-ribbon metamaterial.

Metamaterial-based perfect absorbers promise many applications. Perfect absorption is characterized by the complete suppression of transmission and reflection and complete dissipation of the incident energy by the absorptive meta-atoms. A certain absorption spectrum is usually assigned to a bulk medium and serves as a signature of the respective material. Here we show how to use graphene flakes...

Broadband terahertz absorber based on sinusoidally-patterned graphene

View Online Nano-Micro Conf., 2017, 1, 01009 | 1 Published by Nature Research Society http://nrs.org Broadband terahertz absorber based on sinusoidally-patterned graphene Longfang Ye,* Yao Chen Institute of Electromagnetics and Acoustics, and Department of Electronic Science, Xiamen University, Xiamen 361005, China Corresponding Author. Email: [email protected] Received: 25 May 2017, Accepted: 13...

Metasurface Broadband Solar Absorber

We demonstrate a broadband, polarization independent, wide-angle absorber based on a metallic metasurface architecture, which accomplishes greater than 90% absorptance in the visible and near-infrared range of the solar spectrum, and exhibits low absorptivity (emissivity) at mid- and far-infrared wavelengths. The complex unit cell of the metasurface solar absorber consists of eight pairs of gol...

Perfect metamaterial absorber.

We present the design for an absorbing metamaterial (MM) with near unity absorbance A(omega). Our structure consists of two MM resonators that couple separately to electric and magnetic fields so as to absorb all incident radiation within a single unit cell layer. We fabricate, characterize, and analyze a MM absorber with a slightly lower predicted A(omega) of 96%. Unlike conventional absorbers...