SAW chemical sensor arrays using new thin-film materials

Conference · Sun May 01 00:00:00 EDT 1994

OSTI ID:10151395

Ricco, A J ^[1]; Xu, Chuanjing; Crooks, R M ^[2]; Allred, R E ^[3]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Texas A&M Univ., College Station, TX (United States). Dept. of Chemistry
3. Adherent Technologies, Inc., Albuquerque, NM (United States)

We have used two classes of materials, self-assembled monolayers (SAMs) and plasma-grafted films (PGFs), as new chemically sensitive layers for an array of 97-MHz surface acoustic wave (SAW) delay-line-based devices. Responses of these materials to each of 14 different analytes, representing the classes of saturated alkane, aromatic hydrocarbon, chlorinated hydrocarbon, alcohol, ketone, organophosphonate, and water, have been evaluated using our six-SAW device array. Results reveal a qualitative ``chemical orthogonality`` of the films that is very promising for pattern recognition analysis.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 10151395
• Report Number(s): SAND--94-0241C; CONF-940775--1; ON: DE94011940; BR: GB0103012
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102
ACOUSTICS
CHEMICAL AND SPECTRAL PROCEDURES
GAS ANALYSIS
LAYERS
ORGANIC COMPOUNDS
QUALITATIVE CHEMICAL ANALYSIS
SOUND WAVES
THIN FILMS
VOLATILE MATTER