Chiral metamaterial design using optimized pixelated inclusions with genetic algorithm


Akturk C., Karaaslan M., Ozdemir E., Ozkaner V., Dincer F., Bakir M. , ...More

OPTICAL ENGINEERING, vol.54, no.3, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 3
  • Publication Date: 2015
  • Doi Number: 10.1117/1.oe.54.3.035106
  • Title of Journal : OPTICAL ENGINEERING

Abstract

Chiral metamaterials have been a research area for many researchers due to their polarization rotation properties on electromagnetic waves. However, most of the proposed chiral metamaterials are designed depending on experience or time-consuming inefficient simulations. A method is investigated for designing a chiral metamaterial with a strong and natural chirality admittance by optimizing a grid of metallic pixels through both sides of a dielectric sheet placed perpendicular to the incident wave by using a genetic algorithm (GA) technique based on finite element method solver. The effective medium parameters are obtained by using constitutive equations and S parameters. The proposed methodology is very efficient for designing a chiral metamaterial with the desired effective medium parameters. By using GA-based topology, it is proven that a chiral metamaterial can be designed and manufactured more easily and with a low cost. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)