TY  - JOUR
JF  - Journal Of Physics D: Applied Physics
A1  - Yu, P
A1  - Wu, J
A1  - Ashalley, E
A1  - Govorov, A
A1  - Wang, Z
UR  - http://dx.doi.org/10.1088/0022-3727/49/36/365101
SN  - 0022-3727
IS  - 36
N1  - Copyright © 2016 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in the Journal Of Physics D: Applied Physics. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0022-3727/49/36/365101
VL  - 49
KW  - metamaterials
KW  -  dual-band
KW  -  plasmonics
KW  -  infrared detector
KW  -  perfect absorber
KW  -  FDTD
N2  - For most of the reported metamaterial absorbers, the peak absorption only occurs at one single wavelength. Here, we investigated a dual-band absorber which is based on simple gold nano-rings. Two absorption peaks can be readily achieved in 3?5 µm and 8?14 µm via tuning the width and radius of gold nano-rings and dielectric constant. The average maximum absorption of two bands can be as high as 95.1% (?0.22 dB). Based on the simulation results, the perfect absorber with nano-rings demonstrates great flexibility to create dual-band or triple-band absorption, and thus holds potential for further applications in thermophotovoltaics, multicolor infrared focal plane arrays, optical filters, and biological sensing applications.
ID  - discovery1522579
PB  - IOP PUBLISHING LTD
TI  - Dual-band absorber for multispectral plasmon-enhanced infrared photodetection
Y1  - 2016/08/09/
AV  - public
EP  - 9
ER  -