Method and sensor for pressure sensing based on electrical signal generated by redistribution of mobile ions in piezoionic layer
US10663358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2016 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Nov 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of sensing a pressure applied to a surface comprises monitoring an electrical signal generated by redistribution of mobile ions in a piezoionic layer under the surface. An externally applied local pressure at a portion of the layer induces redistribution of mobile ions in the piezoionic layer. It is determined that the surface is pressured based on detection of the electrical signal. A piezoionic sensor includes a sensing surface; a piezoionic layer disposed under the sensing surface such that an externally applied local pressure on a portion of the sensing surface causes detectable redistribution of mobile ions in the piezoionic layer; and electrodes in contact with the layer, configured to monitor electrical signal generated by the redistribution of mobile ions in the piezoionic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.