Accession Number:

ADD014528

Title:

Block Patterning of the Metallization of Polyvinylidene Fluoride Transducers.

Descriptive Note:

Patent Application, Filed 5 Jul 88,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Goo, Gee-In
• Waters, Thomas A.

Report Date:

1988-07-05

Pagination or Media Count:

16.0

Abstract:

There is disclosed herein a composite sheet used as a transducer for producing voltage in response to intercepted mechanical or thermal stimuli. The composite sheet comprises a sheet such as polyvinylidene fluoride PVDF having at least one of piezoelectric and pyroelectric properties sandwiched between a plurality of thin film conductive blocks arranged in block patterns to establish there between a network of sensors. The composite sheet may be used to wallpaper a room for securing it against intrusion. The composite sheet provides transducer output with improved frequency response over a similar sized transducer without the block patterning. Electric shorting between opposed blocks does not interfere with voltage production in other areas of the composite sheet. Patent applications. jhd

Descriptors:

• *INTRUSION DETECTORS
• *PATENT APPLICATIONS
• *POLYVINYLIDENES
• *PIEZOELECTRIC TRANSDUCERS
• COMPOSITE MATERIALS
• FREQUENCY RESPONSE
• MECHANICAL PROPERTIES
• NETWORKS
• OUTPUT
• PATTERNS
• PRODUCTION
• PYROELECTRICITY
• RESPONSE
• SHEETS
• VOLTAGE

Subject Categories:

• Electromagnetic Shielding

Distribution Statement:

APPROVED FOR PUBLIC RELEASE