Conformal dual-band near-perfectly absorbing mid-infrared metamaterial coating

Zhi Hao Jiang; Seokho Yun; Fatima Toor; Douglas H Werner; Theresa S Mayer

doi:10.1021/nn2004603

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Conformal dual-band near-perfectly absorbing mid-infrared metamaterial coating

Journal article

Peer reviewed

Conformal dual-band near-perfectly absorbing mid-infrared metamaterial coating

Zhi Hao Jiang, Seokho Yun, Fatima Toor, Douglas H Werner and Theresa S Mayer

ACS nano, Vol.5(6), pp.4641-4647

06/28/2011

DOI: 10.1021/nn2004603

PMID: 21456579

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Abstract

Metamaterials offer a new approach to create surface coatings with highly customizable electromagnetic absorption from the microwave to the optical regimes. Thus far, efficient metamaterial absorbers have been demonstrated at microwave frequencies, with recent efforts aimed at much shorter terahertz and infrared wavelengths. The present infrared absorbers have been constructed from arrays of nanoscale metal resonators with simple circular or cross-shaped geometries, which provide a single band response. In this paper, we demonstrate a conformal metamaterial absorber with a narrow band, polarization-independent absorptivity of >90% over a wide ±50° angular range centered at mid-infrared wavelengths of 3.3 and 3.9 μm. The highly efficient dual-band metamaterial was realized by using a genetic algorithm to identify an array of H-shaped nanoresonators with an effective electric and magnetic response that maximizes absorption in each wavelength band when patterned on a flexible Kapton and Au thin film substrate stack. This conformal metamaterial absorber maintains its absorption properties when integrated onto curved surfaces of arbitrary materials, making it attractive for advanced coatings that suppress the infrared reflection from the protected surface.

Absorption

Algorithms

Finite Element Analysis

Gold - chemistry

Materials Testing

Metals - chemistry

Microscopy, Electron, Scanning - methods

Models, Statistical

Molecular Conformation

Nanotechnology - methods

Radiation

Spectrophotometry, Infrared - methods

Details

Title: Subtitle: Conformal dual-band near-perfectly absorbing mid-infrared metamaterial coating
Creators: Zhi Hao Jiang - Pennsylvania State University
Seokho Yun - These authors contributed equally to this work.
Fatima Toor - National Renewable Energy Laboratory
Douglas H Werner - Institute for Computational and Data Sciences (ICDS)
Theresa S Mayer
Resource Type: Journal article
Publication Details: ACS nano, Vol.5(6), pp.4641-4647
DOI: 10.1021/nn2004603
PMID: 21456579
ISSN: 1936-0851
eISSN: 1936-086X
Language: English
Date published: 06/28/2011
Academic Unit: Electrical and Computer Engineering; Iowa Technology Institute; Physics and Astronomy; Holden Comprehensive Cancer Center
Record Identifier: 9984197092002771

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