Cyclodextrin-based surface acoustic wave chemical microsensors

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Description

Cyclodextrin thin films were fabricated using either self-assembled monolayer (SAM) or solgel techniques. The resulting host receptor thin films on the substrates of surface acoustic wave (SAW) resonators were studied as method of tracking organic toxins in vapor phase. The mass loading of surface-attached host monolayers on SAW resonators gave frequency shifts corresponding to typical monolayer surface coverages for SAM methods and ``multilayer`` coverages for sol-gel techniques. Subsequent exposure of the coated SAW resonators to organic vapors at various concentrations, typically 5,000 parts per millions (ppm) down to 100 parts per billions (ppb) by mole, gave responses indicating middle-ppb-sensitivity ({approximately}50 ... continued below

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5 p.

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Li, D.Q.; Shi, J.X.; Springer, K. & Swanson, B.I. July 1, 1996.

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Description

Cyclodextrin thin films were fabricated using either self-assembled monolayer (SAM) or solgel techniques. The resulting host receptor thin films on the substrates of surface acoustic wave (SAW) resonators were studied as method of tracking organic toxins in vapor phase. The mass loading of surface-attached host monolayers on SAW resonators gave frequency shifts corresponding to typical monolayer surface coverages for SAM methods and ``multilayer`` coverages for sol-gel techniques. Subsequent exposure of the coated SAW resonators to organic vapors at various concentrations, typically 5,000 parts per millions (ppm) down to 100 parts per billions (ppb) by mole, gave responses indicating middle-ppb-sensitivity ({approximately}50 ppb) for those sensor-host-receptors and organic-toxin pairs with optimum mutual matching of polarity, size, and structural properties.

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5 p.

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OSTI as DE96012749

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  • SPECTRUM `96: international conference on nuclear and hazardous waste management, Seattle, WA (United States), 18-23 Aug 1996

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  • Other: DE96012749
  • Report No.: LA-UR--96-1970
  • Report No.: CONF-960804--42
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 257397
  • Archival Resource Key: ark:/67531/metadc665446

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  • July 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 29, 2016, 1:46 p.m.

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Li, D.Q.; Shi, J.X.; Springer, K. & Swanson, B.I. Cyclodextrin-based surface acoustic wave chemical microsensors, article, July 1, 1996; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc665446/: accessed April 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.