Optical sensing and separation based on ordered three-dimensional nanostructured surfaces
US9739710B2 · kind B2 · utility
5Cited by
5References
22Claims
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Key dates
| Filing date | Oct 15, 2013 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Oct 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3581
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor having a substrate is provided in which structures are disposed on a surface of the substrate. The structures can be, e.g., nanostructures. Polarized light is directed toward the sensor, and birefringence of the structures with respect to the light is measured. Target particles that interact with the structures are detected based on changes in the measured birefringence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.