Capacitance detection in electrochemical assay
US9645104B2 · kind B2 · utility
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17References
5Claims
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Key dates
| Filing date | Apr 7, 2014 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | May 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system are provided to determine fill sufficiency of a biosensor test chamber by determining capacitance of the test chamber in which an electrochemical reaction is initiated in the test chamber and an oscillating voltage of a predetermined frequency is applied to the chamber. A phase angle between a current output and the oscillating voltage from the chamber is determined and the capacitance is calculated based on a product of the current output and a sine of the phase angle divided by a product of two times pi times the frequency and the voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.