Title

A Characterization Study of Highly-Tailorable 3-D Metamaterials in the Thermal Infrared for Spectral and Directive Emission Behaviors

Date of Award

3-21-2013

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

Abstract

Highly-tailorable thermal infrared metamaterials were characterized between 6 - 20µm wavelengths and Θinc = 0 - 50° incidence angles through FDTD simulations and spectroscopic measurements. Sandia National Laboratories fabricated true 3D metamaterial unit cells of gold bent dipoles inside 5μm cubic cavities using membrane projection lithography. Both measurements and simulations confirmed the existence of electrical and plasmonic dipole resonances, though fabrication errors Jed to spectral broadening and reduced intensity in the measurements. The samples were heated to 150°C and directional emittance was calculated from spectral radiance measurements, and found to be in good agreement spectrally with a Kirchoff emittance calculated from transmittance/reflectance measurements.

AFIT Designator

AFIT-ENP-13-M-01

DTIC Accession Number

NOT IN DTIC

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