Nanocomposite thin films for optical temperature sensing
US9568377B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2014 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Mar 22, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/955
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
The disclosure relates to an optical method for temperature sensing utilizing a temperature sensing material. In an embodiment the gas stream, liquid, or solid has a temperature greater than about 500° C. The temperature sensing material is comprised of metallic nanoparticles dispersed in a dielectric matrix. The metallic nanoparticles have an electronic conductivity greater than approximately 10−1 S/cm at the temperature of the temperature sensing material. The dielectric matrix has an electronic conductivity at least two orders of magnitude less than the dispersed metallic nanoparticles at the temperature of the temperature sensing material. In some embodiments, the chemical composition of a gas stream or liquid is simultaneously monitored by optical signal shifts through multiple or broadband wavelength interrogation approaches. In some embodiments, the dielectric matrix provides additional functionality due to a temperature dependent band-edge, an optimized chemical sensing response, or an optimized refractive index of the temperature sensing material for integration with optical waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.