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MOF Films for Microsensor Coatings

Published online by Cambridge University Press:  22 August 2011

Alex L. Robinson ,
Mark Allendorf ,
Vitalie Stavila  and
Steve M. Thornberg
Alex L. Robinson
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
Mark Allendorf
Affiliation:
Sandia National Laboratories, PO Box 969, Livermore, California 94551, U.S.A.
Vitalie Stavila
Affiliation:
Sandia National Laboratories, PO Box 969, Livermore, California 94551, U.S.A.
Steve M. Thornberg
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
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Abstract

Metal organic framework (MOF) materials are a class of hybrid organic-inorganic crystalline materials whose pore structures and chemical properties can be tailored by the selection of component chemical moieties. Many MOFs have extraordinary intrinsic surface areas, capable of adsorbing large quantities of other chemicals, such as volatile organic compounds or moisture. Upon absorption of guest molecules, many MOFs undergo reversible changes in the dimensions of their unit cells. These properties suggest several routes to chemical sensing in which the transduction mechanisms are: 1) the stress induced at an interface between a flexible MOF layer and a static microcantilever fabricated with a built-in piezoresistive stress sensor; 2) the change in the resonant frequency of an oscillating microcantilever induced by mass adsorption; and 3) the change in the resonant frequency of a acoustic sensor, such as a surface acoustic wave (SAW) sensor through changes in mass loading and film moduli. This paper focuses on humidity sensing by SAWs coated with Cu3(BTC)2 (HKUST-1) over a very broad concentration range.

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.

Keywords

sensorcoatingcrystal growth
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1366: Symposium UU – Crystalline Nanoporous Framework Materials—Applications and Technological Feasibility , 2011 , mrss11-1366-uu08-02
Copyright
Copyright © Materials Research Society 2011

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References

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