Differential detection for surface plasmon resonance sensor and method
US8958999B1 · kind B1 · utility
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Key dates
| Filing date | Aug 1, 2011 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Dec 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential measurement design employing two nearly collinear optical beams provides surface plasmon polariton resonance (SPR) sensors and a corresponding method of increased dynamic range and signal to noise ratio. The differential measurement device and method based on wavelength interrogation, employs a single incident polarization state, and is combined with a 2-D nanohole array for operation at near-normal incidence, where this approach offers a decrease in the measurement time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.