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Optical devices and methods employing nanoparticles, microcavities, and semicontinuous metal films
- Publication Year :
- 2006
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 2006.
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Abstract
- An optical sensing enhancing material (and corresponding method of making) comprising: a medium, the medium comprising a plurality of aggregated nanoparticles comprising fractals; and a microcavity, wherein the medium is located in a vicinity of the microcavity. Also an optical sensor and sensing method comprising: providing a doped medium, the medium comprising a plurality of aggregated nanoparticles comprising fractals, with the material; locating the doped medium in the vicinity of a microcavity; exciting the doped medium with a light source; and detecting light reflected from the doped medium. Also an optical sensing enhancing material comprising a medium, the medium comprising a semicontinuous metal film of randomly distributed metal particles and their clusters at approximately their percolation threshold. The medium preferably additionally comprises a microcavity/microresonator. Also devices and methods employing such material.
- Subjects :
- Optics
Subjects
Details
- Language :
- English
- Database :
- NASA Technical Reports
- Notes :
- NAG8-1710
- Publication Type :
- Report
- Accession number :
- edsnas.20080008815
- Document Type :
- Report