Integrated chemiresistor array for small sensor platforms

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Description

Chemiresistors are fabricated from materials that change their electrical resistance when exposed to certain chemical species. Composites of soluble polymers with metallic particles have shown remarkable sensitivity to many volatile organic chemicals, depending on the ability of the analyte molecules to swell the polymer matrix. These sensors can be made extremely small (< 100 square microns), operate at ambient temperatures, and require almost no power to read-out. However, the chemiresistor itself is only a part of a more complex sensor system that delivers chemical information to a user who can act on the information. The authors present the design, fabrication ... continued below

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10 p.

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HUGHES,ROBERT C.; CASALNUOVO,STEPHEN A.; WESSENDORF,KURT O.; SAVIGNON,DANIEL J.; HIETALA,SUSAN LESLIE & PATEL,SANJAY V. April 13, 2000.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Chemiresistors are fabricated from materials that change their electrical resistance when exposed to certain chemical species. Composites of soluble polymers with metallic particles have shown remarkable sensitivity to many volatile organic chemicals, depending on the ability of the analyte molecules to swell the polymer matrix. These sensors can be made extremely small (< 100 square microns), operate at ambient temperatures, and require almost no power to read-out. However, the chemiresistor itself is only a part of a more complex sensor system that delivers chemical information to a user who can act on the information. The authors present the design, fabrication and performance of a chemiresistor array chip with four different chemiresistor materials, heaters and a temperature sensor. They also show the design and fabrication of an integrated chemiresistor array, where the electronics to read-out the chemiresistors is on the same chip with the electrodes for the chemiresistors. The circuit was designed to perform several functions to make the sensor data more useful. This low-power, integrated chemiresistor array is small enough to be deployed on a Sandia-developed microrobot platform.

Physical Description

10 p.

Notes

OSTI as DE00754335

Medium: P; Size: 10 pages

Source

  • SPIE International Symposium on Aero/Sense, Orlando, FL (US), 04/24/2000--04/28/2000

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  • Report No.: SAND99-2823C
  • Report No.: 0000033745-000
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 754335
  • Archival Resource Key: ark:/67531/metadc706513

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • April 13, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 6, 2017, 6:55 p.m.

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HUGHES,ROBERT C.; CASALNUOVO,STEPHEN A.; WESSENDORF,KURT O.; SAVIGNON,DANIEL J.; HIETALA,SUSAN LESLIE & PATEL,SANJAY V. Integrated chemiresistor array for small sensor platforms, article, April 13, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc706513/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.