Chemical preconcentrator
Abstract
A chemical preconcentrator is disclosed with applications to chemical sensing and analysis. The preconcentrator can be formed by depositing a resistive heating element (e.g. platinum) over a membrane (e.g. silicon nitride) suspended above a substrate. A coating of a sorptive material (e.g. a microporous hydrophobic sol-gel coating or a polymer coating) is formed on the suspended membrane proximate to the heating element to selective sorb one or more chemical species of interest over a time period, thereby concentrating the chemical species in the sorptive material. Upon heating the sorptive material with the resistive heating element, the sorbed chemical species are released for detection and analysis in a relatively high concentration and over a relatively short time period. The sorptive material can be made to selectively sorb particular chemical species of interest while not substantially sorbing other chemical species not of interest. The present invention has applications for use in forming high-sensitivity, rapid-response miniaturized chemical analysis systems (e.g. a "chem lab on a chip").
- Inventors:
-
- Albuquerque, NM
- Cedar Crest, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 873483
- Patent Number(s):
- 6171378
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- chemical; preconcentrator; disclosed; applications; sensing; analysis; formed; depositing; resistive; heating; element; platinum; membrane; silicon; nitride; suspended; substrate; coating; sorptive; material; microporous; hydrophobic; sol-gel; polymer; proximate; selective; sorb; species; time; period; concentrating; sorbed; released; detection; relatively; concentration; selectively; particular; substantially; sorbing; forming; high-sensitivity; rapid-response; miniaturized; systems; chem; lab; chip; chemical sensing; resistive heating; polymer coating; sol-gel coating; chemical analysis; heating element; silicon nitride; time period; chemical species; chemical specie; sorptive material; selectively sorb; chemical preconcentrator; sorbed chemical; /96/55/
Citation Formats
Manginell, Ronald P, and Frye-Mason, Gregory C. Chemical preconcentrator. United States: N. p., 2001.
Web.
Manginell, Ronald P, & Frye-Mason, Gregory C. Chemical preconcentrator. United States.
Manginell, Ronald P, and Frye-Mason, Gregory C. Mon .
"Chemical preconcentrator". United States. https://www.osti.gov/servlets/purl/873483.
@article{osti_873483,
title = {Chemical preconcentrator},
author = {Manginell, Ronald P and Frye-Mason, Gregory C},
abstractNote = {A chemical preconcentrator is disclosed with applications to chemical sensing and analysis. The preconcentrator can be formed by depositing a resistive heating element (e.g. platinum) over a membrane (e.g. silicon nitride) suspended above a substrate. A coating of a sorptive material (e.g. a microporous hydrophobic sol-gel coating or a polymer coating) is formed on the suspended membrane proximate to the heating element to selective sorb one or more chemical species of interest over a time period, thereby concentrating the chemical species in the sorptive material. Upon heating the sorptive material with the resistive heating element, the sorbed chemical species are released for detection and analysis in a relatively high concentration and over a relatively short time period. The sorptive material can be made to selectively sorb particular chemical species of interest while not substantially sorbing other chemical species not of interest. The present invention has applications for use in forming high-sensitivity, rapid-response miniaturized chemical analysis systems (e.g. a "chem lab on a chip").},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}
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