Capacitive chemical sensor
Abstract
A microfabricated capacitive chemical sensor can be used as an autonomous chemical sensor or as an analyte-sensitive chemical preconcentrator in a larger microanalytical system. The capacitive chemical sensor detects changes in sensing film dielectric properties, such as the dielectric constant, conductivity, or dimensionality. These changes result from the interaction of a target analyte with the sensing film. This capability provides a low-power, self-heating chemical sensor suitable for remote and unattended sensing applications. The capacitive chemical sensor also enables a smart, analyte-sensitive chemical preconcentrator. After sorption of the sample by the sensing film, the film can be rapidly heated to release the sample for further analysis. Therefore, the capacitive chemical sensor can optimize the sample collection time prior to release to enable the rapid and accurate analysis of analytes by a microanalytical system.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1132610
- Patent Number(s):
- 8736000
- Application Number:
- 11/583,442
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2006 Oct 19
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Manginell, Ronald P, Moorman, Matthew W, and Wheeler, David R. Capacitive chemical sensor. United States: N. p., 2014.
Web.
Manginell, Ronald P, Moorman, Matthew W, & Wheeler, David R. Capacitive chemical sensor. United States.
Manginell, Ronald P, Moorman, Matthew W, and Wheeler, David R. Tue .
"Capacitive chemical sensor". United States. https://www.osti.gov/servlets/purl/1132610.
@article{osti_1132610,
title = {Capacitive chemical sensor},
author = {Manginell, Ronald P and Moorman, Matthew W and Wheeler, David R},
abstractNote = {A microfabricated capacitive chemical sensor can be used as an autonomous chemical sensor or as an analyte-sensitive chemical preconcentrator in a larger microanalytical system. The capacitive chemical sensor detects changes in sensing film dielectric properties, such as the dielectric constant, conductivity, or dimensionality. These changes result from the interaction of a target analyte with the sensing film. This capability provides a low-power, self-heating chemical sensor suitable for remote and unattended sensing applications. The capacitive chemical sensor also enables a smart, analyte-sensitive chemical preconcentrator. After sorption of the sample by the sensing film, the film can be rapidly heated to release the sample for further analysis. Therefore, the capacitive chemical sensor can optimize the sample collection time prior to release to enable the rapid and accurate analysis of analytes by a microanalytical system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 27 00:00:00 EDT 2014},
month = {Tue May 27 00:00:00 EDT 2014}
}
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Works referencing / citing this record:
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patent, January 2016
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