The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2012
Filed:
Jan. 30, 2012
Andrea M. Armani, Pasadena, CA (US);
Tsu-te J. Su, Boca Raton, FL (US);
Richard C. Flagan, Pasadena, CA (US);
Scott E. Fraser, La Canada, CA (US);
Andrea M. Armani, Pasadena, CA (US);
Tsu-Te J. Su, Boca Raton, FL (US);
Richard C. Flagan, Pasadena, CA (US);
Scott E. Fraser, La Canada, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
Micro-cavity gas or vapor sensors and gas or vapor detection methods. Optical energy is introduced into a resonant micro-cavity having a deformable coating such as a polymer. The coating swells or expands when it is exposed to or absorbs a gas or vapor, thereby changing the resonant wavelength of optical energy circulating within the micro-cavity/coating. Expansion or swelling of the coating may be reversible such that it contracts when gas or vapor diffuses from the coating. The coating deformation and/or a change of one or more optical properties of the optical energy circulating within the micro-cavity are used to detect the presence of the gas or vapor or molecules or particulates thereof.