Sensing switch and detecting method using the same
US7790440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2008 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54373
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a sensing switch and a sensing method using the same. The sensing switch includes: a substrate; a supporter on the substrate; a sensing plate that is connected to a side of the supporter and is in parallel with the substrate by a predetermined distance; a receptor binding region on an upper surface of an end portion of the sensing plate; an electric or magnetic field generation device that induces deflection of the sensing plate when a receptor bound to the receptor binding region is selectively bound to an electrically or magnetically active ligand; and a pair of switching electrodes that are separated by a predetermined distance and is connected when the sensing plate contacts the substrate due to the deflection of the sensing plate. A target material need not be labelled, a signal processing of a fluorescent or electrical detection signal using an analysis apparatus is not required, and a signal can be directly decoded by confirming whether a current flows through the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.