Shape-Selectivity with Liquid Crystal and Side-Chain Liquid Crystalline Polymer SAW Sensor Interfaces

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Description

A liquid crystal (LC) and a side-chain liquid crystalline polymer (SCLCP) were tested as surface acoustic wave (SAW) vapor sensor coatings for discriminating between pairs of isomeric organic vapors. Both exhibit room temperature smectic mesophases. Temperature, electric-field, and pretreatment with self-assembled monolayers comprising either a methyl-terminated or carboxylic acid-terminated alkane thiol anchored to a gold layer in the delay path of the sensor were explored as means of affecting the alignment and selectivity of the LC and SCLCP films. Results for the LC were mixed, while those for the SCLCP showed a consistent preference for the more rod-like isomer of ... continued below

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4 p.

Creation Information

Zellers, Edward T.; Oborny, Michael C.; Thomas, Ross C.; Ricco, Antonio; Frye-Mason, Gregory Charles; Zhang, Guo-Zheng et al. September 23, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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

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Description

A liquid crystal (LC) and a side-chain liquid crystalline polymer (SCLCP) were tested as surface acoustic wave (SAW) vapor sensor coatings for discriminating between pairs of isomeric organic vapors. Both exhibit room temperature smectic mesophases. Temperature, electric-field, and pretreatment with self-assembled monolayers comprising either a methyl-terminated or carboxylic acid-terminated alkane thiol anchored to a gold layer in the delay path of the sensor were explored as means of affecting the alignment and selectivity of the LC and SCLCP films. Results for the LC were mixed, while those for the SCLCP showed a consistent preference for the more rod-like isomer of each isomer pair examined.

Physical Description

4 p.

Notes

OSTI as DE00014047

Medium: P; Size: 4 pages

Source

  • 12th European Conference on Solid-State Transducers, Netherlands, 09/12/1999--09/15/1999

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  • Report No.: SAND99-2468C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 14047
  • Archival Resource Key: ark:/67531/metadc619942

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  • September 23, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 10, 2017, 8:29 p.m.

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Zellers, Edward T.; Oborny, Michael C.; Thomas, Ross C.; Ricco, Antonio; Frye-Mason, Gregory Charles; Zhang, Guo-Zheng et al. Shape-Selectivity with Liquid Crystal and Side-Chain Liquid Crystalline Polymer SAW Sensor Interfaces, article, September 23, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc619942/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.