Real time measurement of shock pressure
US8135244B1 · kind B1 · utility
8Cited by
5References
32Claims
0Family size
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Key dates
| Filing date | Nov 14, 2007 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Sep 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber-based optical pressure-sensor, made using semiconductor nanocrystal quantum dots (NQDs) as the active transducing material, provides response time fast enough for shock wave measurements. For NQDs, the shift in band gap as a result of applied pressure can be observed as a shift of the photoluminescence (PL) peak. Further, the shift of the principal absorbance feature allows pressure measurements faster than those obtainable by following the PL peak.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.