Resonant sensor capable of wireless interrogation
US7922975B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Apr 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A resonant sensor for detecting a specific environmental analyte is presented. The resonant sensor comprises a top conductive layer of two ground conductors and a center signal line, a bottom conductive layer of two ground lines shunted together by a shunt line and a sensing layer positioned between the top conductive layer and the bottom conductive layer. A capacitor is created by the overlap of the center signal line of the top conductive layer and the shunt line of the bottom conductive layer. Electrical properties of the sensing layer change in response to binding the specific environmental analyte with the sensing layer. The sensing layer can be an electro-optic polymer. Nanoparticles or carbon nanotubes can be dispersed within the sensing layer to bind with the specific environmental analyte. An integrated antenna can be incorporated into to sensor to receive radio frequencies for wireless, passive sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.