Shear axial modes in a PCTSCM Part I: Piezoelectric stiffening and selective attenuation

Steven F. Nagle, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

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Abstract

The material properties of a piezoelectric continuously twisted structurally chiral medium (PCTSCM) vary helicoidally along the axial direction. Since the degree of piezoelectric coupling can be engineered to a reasonable extent, PCTSCMs are promising candidates for future transduction devices. In this paper, we implement the quasi-electrostatic approximation for axial propagation modes in PCTSCMs, particularly for those with hexagonal 6mm reference crystal symmetry. Axial propagation of shear modes is affected by piezoeletric stiffening. Axial propagation displays selective attenuation and can be classified into three zones. The zone of selective attenuation can be altered by the degree of piezoelectric stiffening as well as by the spatial frequency of the PCTSCM.

Original languageEnglish (US)
Pages (from-to)195-201
Number of pages7
JournalSensors and Actuators: A. Physical
Volume49
Issue number3
DOIs
Publication statusPublished - Jan 1 1995

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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