Near-field scanning optical microscope probe exhibiting resonant plasmon excitation
US5789742A · kind A · utility
33Cited by
8References
14Claims
0Family size
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Key dates
| Filing date | Oct 28, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Oct 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/241
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A tapered probe tip for use in near-field scanning optical microscopy is coated with a sheath of metal material having a plasma frequency comparable to optical frequencies. Alternatively, the sheath material has lower energy plasmons. The preferred sheath material is silver. Other preferred sheath materials are potassium, Rb, cesium, tungsten oxide, sodium tungsten oxide and Re oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.