Structural Composites With Tuned EM Chirality

Abstract

he AFOSR project on structural composites with tunable chiral elements has produced some impressive results in the past few years. These include (1) electronically tunable overall chiral composites, (2) mechanically tunable chiral composites, (3) flat lenses with soft hyperbolic focusing due to indefinite overall permittivity, (4) a tunable flat lens based on chiral elements with adjustable focal spot based on applied mechanical deformation, and (5) a three-phase periodic composite was created that demonstrates positive and negative refraction depending on the input frequency and angle of incidence. A MATLAB code directly computes the group velocity and pass bands for a given set of wave vectors and generates an intuitive plot for quick, but thorough, analysis.

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Document Details

Document Type
Technical Report
Publication Date
Dec 23, 2014
Accession Number
ADA613691

Entities

People

  • Siavouche Nemat-nasser

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Advanced Electronics
  • Autonomy

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Circuit Boards
  • Composite Materials
  • Electromagnetic Properties
  • Engineering
  • Frequency
  • Frequency Bands
  • Group Velocity
  • Materials
  • Materials Processing
  • Materials Science
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Metamaterials
  • Negative Index Metamaterials
  • Scientists

Fields of Study

  • Physics

Readers

  • Geodesy
  • Materials Science and Engineering.
  • Microwave Engineering.

Technology Areas

  • Microelectronics