Magnetostrictive substance detection system and method
US8302478B2 · kind B2 · utility
1Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2007 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Feb 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H11/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a method of detecting the presence of a substance comprising providing a cantilever (30) comprising a magnetostrictive material (34) and having an original resonant frequency. The method also comprises receiving the substance on the cantilever (30, 36) causing the resonant frequency of the cantilever (30) to change. The method also comprises applying a magnetic field to the cantilever (30) causing the resonant frequency to change to a reference resonant frequency and sensing when the resonant frequency becomes the reference resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.