Random negative index material structures in a three-dimensional volume
US7593170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Materials and methods for fabricating and using negative index materials are disclosed. A negative index material comprises a three-dimensional volume including a bulk solution and a plurality of unit cells disposed in the bulk solution in a substantially random pattern. Each unit cell comprises a periodic hole array pattern on a substrate or a resonator formed on a first surface of a substrate, and a thin wire pattern formed on a second surface of the substrate. The combination of the unit cells in the bulk solution produces a negative effective permeability and a negative effective permittivity over a frequency band of interest for the three-dimensional volume. The negative index material may be used to focus radiation by directing an incident radiation at the negative index material and generating a focused radiation by a negative refraction of the incident radiation in the negative index material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.