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Issue 2, 2019
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An ultra-flexible plasmonic metamaterial film for efficient omnidirectional and broadband optical absorption

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Abstract

An omnidirectional and broadband optical absorber has long been pursued for its wide application in optics, sensing and energy fields. The recent development of flexible and non-planar optoelectronic devices, however, poses a great challenge to fabricate an optical absorber with excellent mechanical flexibility. Here, based on a facile solution method, we demonstrate an ultra-flexible plasmonic metamaterial film (PMF), which is a composite of gold nanoparticles (Au NPs) and aramid nanofibers, to achieve omnidirectional and broadband optical absorption. Due to the comprehensive contributions of the anti-reflection effect of the PMF surface, localized surface plasmon resonances of the Au NPs, and non-resonant decay of light inside the nanocomposite, the PMF exhibits highly efficient omnidirectional and broadband absorption at visible and near-infrared frequencies. In addition, it also presents exceptional mechanical and fast collective light-heating properties, which makes it promising to be applied on flexible and non-planar photo-thermal devices.

Graphical abstract: An ultra-flexible plasmonic metamaterial film for efficient omnidirectional and broadband optical absorption

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Article information


Submitted
30 Jun 2018
Accepted
29 Sep 2018
First published
02 Oct 2018

Nanoscale, 2019,11, 437-443
Article type
Paper

An ultra-flexible plasmonic metamaterial film for efficient omnidirectional and broadband optical absorption

H. Zhang, L. Feng, Y. Liang and T. Xu, Nanoscale, 2019, 11, 437
DOI: 10.1039/C8NR05276J

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