Graphene optical sensor
US8395774B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 21, 2010 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Jun 7, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7783
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of using an optical sensor, the optical sensor comprising a sensing surface comprising graphene layer, the sensing surface located on a substrate, includes determining a first optical absorption spectrum for the graphene layer by a spectrophotometer; adding an analyte, the analyte selected to cause a shift in the first optical absorption spectrum, to the graphene layer; determining a second optical absorption spectrum for the modified graphene layer by a spectrophotometer; determining a shift between the first optical absorption spectrum and the second optical absorption spectrum; and determining a makeup of the analyte based on the determined shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.