Plasmon generator including two portions made of different metals
US8576674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2011 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Jan 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plasmon generator configured to excite a surface plasmon based on light includes a first portion formed of a first metal material and a second portion formed of a second metal material different from the first metal material. The plasmon generator has a front end face. The front end face includes a near-field light generating part that generates near-field light based on the surface plasmon. The second portion includes an end face located in the front end face. The second metal material satisfies at least one of the following requirements: a lower ionization tendency than that of the first metal material; a lower electrical conductivity than that of the first metal material; and a higher Vickers hardness than that of the first metal material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.