Method for sensing a chemical
US8512966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jun 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/5438
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method for detecting an analyte (10) in a sample, comprising the steps of: providing a transducer comprising a pyroelectric or piezoelectric element and electrodes which is capable of transducing a change in energy to an electrical signal, a first reagent immobilised on the transducer, and a second reagent (11) releasably bound to the first reagent and having a label attached thereto which is capable of absorbing electromagnetic radiation to generate energy by non-radiative decay, wherein either the first or second reagent has a binding site which allows binding to the other and which is capable of preferentially binding to the analyte or a derivative of the analyte; exposing the transducer to the sample thereby allowing the analyte or a derivative of the analyte to bind to the binding site and displace the second reagent; irradiating the sample with electromagnetic radiation; transducing the energy generated into an electrical signal; and detecting the electrical signal. The invention also provides a device for carrying out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.