Directional thermal emission from a leaky-wave frequency-selective surface

Edward C. Kinzel; James C. Ginn III; Louis A. Florence; Brian A. Lail; Glenn D. Boreman

doi:10.1117/1.JNP.9.093040

14 December 2015 Directional thermal emission from a leaky-wave frequency-selective surface

Edward C. Kinzel, James C. Ginn III, Louis A. Florence, Brian A. Lail, Glenn D. Boreman

Author Affiliations +

Journal of Nanophotonics, Vol. 9, Issue 1, 093040 (December 2015). https://doi.org/10.1117/1.JNP.9.093040

Abstract

We design, fabricate, and characterize a frequency-selective surface (FSS) with directional thermal emission and absorption for long-wave infrared wavelengths. The FSS consists of an array of patch antennas connected by microstrips, the ensemble of which supports leaky-wave-type modes with forward and backward propagating branches. The branches are designed to intersect at 9.8 μm and have a broadside beam with 20-deg full width at half maximum at this wavelength. The absorption along these branches is near unity. Measurement of the hemispherical directional reflectometer shows good agreement with simulation. The ability to control the spectral and directional emittance/absorptance profiles of surfaces has significant applications for radiation heat transfer and sensing.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Edward C. Kinzel, James C. Ginn III, Louis A. Florence, Brian A. Lail, and Glenn D. Boreman "Directional thermal emission from a leaky-wave frequency-selective surface," Journal of Nanophotonics 9(1), 093040 (14 December 2015). https://doi.org/10.1117/1.JNP.9.093040

Published: 14 December 2015

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KEYWORDS

Antennas

FSS based metamaterials

Wave propagation

Thermography

Infrared radiation

High dynamic range imaging

Radio propagation

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