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Micro-cavity gas and vapor sensors and detection methods

Armani, Andrea M. and Su, Tsu-Te J. and Flagan, Richard C. and Fraser, Scott E. (2012) Micro-cavity gas and vapor sensors and detection methods. Patent number: US8310677B2.

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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.

Item Type:Patent
Related Patents:US 8,107,081, US20120120398A1
Patent Classification:Current U.S. Class: 356/437; 356/432. Current CPC Class: G01N 21/7746 (20130101); G01N 21/783 (20130101); G01N 33/0037 (20130101); G01N 33/0047 (20130101); G01N 33/0054 (20130101); G01N 33/0049 (20130101); G01N 33/22 (20130101); G01N 2021/773 (20130101); G01N 2021/7789 (20130101). Current International Class: G01N 21/00 (20060101).
Patent Assignee:California Institute of Technology
Related URLs:
URLURL TypeDescription Patents site Patent Office
Armani, Andrea M.0000-0001-9890-5104
Flagan, Richard C.0000-0001-5690-770X
Fraser, Scott E.0000-0002-5377-0223
Additional Information:Publication number US8310677B2. Publication type Grant. Publication date November 13, 2012 . Application number US 13/361,076. Application publication date Oct. 14, 2010. Filing date January 30, 2012. Priority date Oct. 10, 2007. Parent Case Text: CROSS REFERENCE TO RELATED APPLICATIONS: This application is a continuation of co-pending U.S. application Ser. No. 12/243,580, filed Oct. 1, 2008, which claims the benefit under 35 U.S.C. .sctn.119 of U.S. Provisional Application Ser. Nos. 60/997,141; 60/997,142 and 60/997,143, all of which were filed on Oct. 1, 2007, the contents of all of which are incorporated herein by reference as though set forth in full. This application may also be related to the following applications, the contents of which are also incorporated herein by reference as though set forth in full: U.S. application Ser. No. 11/733,480 (Publication No. 2007/0269901) and U.S. application Ser. No. 10/678,354 (Publication No. 2004/0179573).
Record Number:CaltechAUTHORS:20150910-085106181
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60163
Deposited By: Irina Meininger
Deposited On:25 Feb 2016 00:26
Last Modified:10 Mar 2020 17:41

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