Accession Number : ADD011865

Title :   Surface Acoustic Wave Device for Sensing the Presence of Chemical Agents.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Ballato,A

Report Date : 07 Aug 1985

Pagination or Media Count : 15

Abstract : A surface acoustic wave device is provided for sensing the presence of chemical agents by cheo-electronic means. The device includes a quartz substrate and means deposited on the substrate for propagating and receiving surface acoustic waves along the surface of the substrate. Regions are provided on the substrate containing etched tunnels, the walls of the etched tunnel being coated within with a chemical substance sensitive to the chemical agent to be detected. When surface acoustic waves are caused to pass over these regions, the reaction of the chemical agent to be detected with the chemical substance causes a change in the acoustic wave velocity. (Author)

Descriptors :   *PATENT APPLICATIONS, *SURFACE ACOUSTIC WAVES, *CHEMICAL AGENTS, ACOUSTIC VELOCITY, ACOUSTIC WAVES, DEPOSITION, SUBSTRATES, ETCHING, TUNNELS, CHEMICALS, QUARTZ, SURFACE ACOUSTIC WAVE DEVICES, SURFACES

Subject Categories : Chemical, Biological and Radiological Warfare
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE