Characterization and failure analysis of a sensor using impedance frequency response spectra
US10598630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2016 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Mar 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to at least one aspect of the present disclosure, a method includes applying an alternating current having a frequency at a selected voltage to a sensor, wherein the voltage is applied between a reference electrode and a working electrode of the sensor, varying the frequency of the alternating current between a lower frequency and an upper frequency, measuring an impedance of the sensor between the reference electrode and the working electrode as a function of the frequency of the alternating current, analyzing the measured impedance to determine a total impedance of the sensor and the real and imaginary components of the total impedance at each applied frequency of the alternating current, and characterizing the sensor based on the total impedance at the low frequency end of the sensor and on the real and imaginary components of the total impedances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.