USAF/NRL Surface Acoustic Wave Vapor Sensor Program.

Abstract

A sensitive, inexpensive chemical microsensor is described that is capable of meeting performance requirements for DoD applications. Experimentally obtained frequency shifts for known mass loading compare favorably with theoretically predicted mass sensitivities for the 31, 52 and 112 MHz surface acoustic wave (SAW) devices. The 300 MHz SAW device exhibits a frequency stability of better than 1 part in 10 to the 7th power, as well as good temperature and pressure stability under ambient conditions. Response times were generally less than 10 sec. When coated with a fluorepoxy pre-polymer this device exhibited a calculated detection limit of 0.04 mg/cu m for DMMP.

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Document Details

Document Type
Technical Report
Publication Date
Oct 06, 1986
Accession Number
ADA172876

Entities

People

  • A. Snow
  • D. Ballantine
  • G. Chingas
  • H. Wohltjen
  • M. Klusty

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Waves
  • Chemical Synthesis
  • Chemical Warfare Agents
  • Chemistry
  • Classification
  • Delay Lines
  • Detection
  • Electronics
  • Equations
  • Frequency
  • Frequency Shift
  • Materials
  • Printed Circuits
  • Rayleigh Waves
  • Resonant Frequency
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Microwave Engineering.
  • Sensor Fusion and Tracking Systems.