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Method for Sensing and Classification of Molecules Using Porous Optical Films

详细技术说明

University researchers have developed methods of sensing and identifying vapor analytes based on temperature cycling of an optically interrogated porous optical film sensor. For example, the hysteresis in the temporal response of the photonic stop band from an oxidized porous silica chemical sensor distinguishes between the analytes isopropanol, heptane, and cyclohexane. The discrimination capability is attributed to diffusion and adsorption processes that are characteristic of the analyte/surface interaction, similar to a temperature programmed desorption or a chromatographic experiment. The field of the invention is multi-component chemical sensing and gas analysis with applications in environmental monitoring, homeland security, general research/industry, niche uses, e.g., smoke detection, breath analysis, etc.

附加资料

Patent Number: US20130114082A1
Application Number: US13811147A
Inventor: Sailor, Michael J. | King, Brian | Noda, Sadafumi
Priority Date: 20 Jul 2010
Priority Number: US20130114082A1
Application Date: 18 Jan 2013
Publication Date: 9 May 2013
IPC Current: G01N002125
US Class: 356402
Assignee Applicant: The Regents of the University of California
Title: TEMPERATURE RESPONSE SENSING AND CLASSIFICATION OF ANALYTES WITH POROUS OPTICAL FILMS
Usefulness: TEMPERATURE RESPONSE SENSING AND CLASSIFICATION OF ANALYTES WITH POROUS OPTICAL FILMS
Summary: The method is useful for sensing a vapor for determining identity and quantity of analytes in the vapor.
Novelty: Sensing vapor for determining identity and quantity of analytes, comprises adsorbing analyte into porous optical film, exposing porous optical film such as photonic crystal to vapor containing analyte, and heating porous optical film