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Accession Number:
AD1028150
Title:
Dielectric Metamaterial Reflector
Descriptive Note:
Technical Report,18 Feb 2016,14 Feb 2017
Corporate Author:
SRI International Menlo Park, United States
Report Date:
2017-02-14
Pagination or Media Count:
35.0
Abstract:
The overall goal of this project is to develop paint-like andor applique material with very high reflectivity and low absorptivity in near infrared region of electromagnetic spectrum. In this Year 1 of the project, we have designed metamaterial with an effective real-impedance of zero, which is predicted to have a reflectivity close to 100 at a chosen wavelength. We exploited Mie resonance in monodisperse wavelength-sized particles to achieve effectively zero real impedance. In our design, we choose the size of the non-absorbing dielectric spheres to achieve Mie resonance at the wavelength of interest, a dielectric coating thickness to maintain periodicity under self-assembly conditions, and transparent binder medium amenable to either paint-like material or applique. We have optimized the design by including nonlinear absorption, materials defects and thermal propagation for enhanced reflection and angular performance.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
