Accession Number : ADA194956
Title : Piezoelectric and Electrostrictive Materials for Transducer Applications. Volume 2.
Descriptive Note : Annual rept. 1 Jan-31 Dec 87,
Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB
Personal Author(s) : Cross, L E ; Newnham, R E ; Barsch, G R ; Biggers, J V
Report Date : Mar 1988
Pagination or Media Count : 196
Abstract : A modified Michelson interferometer is used to study the strain properties of piezoelectric and electrostrictive materials. For small displacement, a feedback loop is introduced to stabilize the system against the low frequency optical path-length drifting and the system is capable of resolving displacements of the order of .001 A. For the strain induced by domain switching a dual-channel signal detection scheme is used which automatically reads out the displacement of the sample. The effect on the measurement of the sample bonding to a substrate and other related problems are discussed.
Descriptors : *ELECTROSTRICTION , *PIEZOELECTRIC MATERIALS , DETECTION , DISPLACEMENT , DUAL CHANNEL , FEEDBACK , LOOPS , MATERIALS , MICHELSON INTERFEROMETERS , SIGNALS , SUBSTRATES , SWITCHING , TRANSDUCERS
Subject Categories : Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE