Dielectric Metamaterial Reflector
Abstract
The overall goal of this project is to develop paint-like and/or 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 14, 2017
- Accession Number
- AD1028150
Entities
People
- Srini Krishnamurthy
Organizations
- SRI International