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Spectroscopic chemical analysis methods and apparatus
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Author and Affiliation: Hug, William F. [Inventor]
Reid, Ray D. [Inventor]
Bhartia, Rohit [Inventor]
Abstract: Spectroscopic chemical analysis methods and apparatus are disclosed which employ deep ultraviolet (e.g. in the 200 nm to 300 nm spectral range) electron beam pumped wide bandgap semiconductor lasers, incoherent wide bandgap semiconductor light emitting devices, and hollow cathode metal ion lasers to perform non-contact, non-invasive detection of unknown chemical analytes. These deep ultraviolet sources enable dramatic size, weight and power consumption reductions of chemical analysis instruments. Chemical analysis instruments employed in some embodiments include capillary and gel plane electrophoresis, capillary electrochromatography, high performance liquid chromatography, flow cytometry, flow cells for liquids and aerosols, and surface detection instruments. In some embodiments, Raman spectroscopic detection methods and apparatus use ultra-narrow-band angle tuning filters, acousto-optic tuning filters, and temperature tuned filters to enable ultra-miniature analyzers for chemical identification. In some embodiments Raman analysis is conducted along with photoluminescence spectroscopy (i.e. fluorescence and/or phosphorescence spectroscopy) to provide high levels of sensitivity and specificity in the same instrument.
Publication Date: Mar 12, 2013
Document ID:
20130013518
(Acquired May 24, 2013)
Subject Category: INORGANIC, ORGANIC AND PHYSICAL CHEMISTRY
Report/Patent Number: US-Patent-8,395,770, US-Patent-Appl-SN-12/545,772
Document Type: Patent
Contract/Grant/Task Num: NAS2-02086
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA United States
Organization Source: Photon Systems; Covina, CA United States
Description: 35p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: CHEMICAL ANALYSIS; ULTRAVIOLET RADIATION; SPECTROSCOPIC ANALYSIS; CYTOMETRY; ELECTROPHORESIS; LIQUID CHROMATOGRAPHY; PHOTOLUMINESCENCE; RAMAN SPECTROSCOPY
Miscellaneous Notes: This application is a continuation-in-part of U.S. patent application Ser. No. 12/399,743, filed Mar. 6, 2009 now U.S. Pat. No. 7,800,753 which in turn is a continuation of U.S. patent application Ser. No. 11/245,486 filed Oct. 5, 2005 now U.S. Pat. No. 7,525,653 which in turn claims benefit of U.S. Provisional Application No. 60/616,269, filed Oct. 5, 2004. Each of these applications is incorporated herein by reference as if set forth in full herein.
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