The narrow pass band filter of tunable 1D phononic crystals with a dielectric elastomer layer

Liang Yu Wu, Mei Ling Wu, Lien-Wen Chen

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

In this paper, we study the defect bands of a 1D phononic crystal consisting of aluminum (Al) and polymethyl methacrylate (PMMA) layers with a dielectric elastomer (DE) defect layer. The plane wave expansion (PWE) method and supercell calculation are used to calculate the band structure and the defect bands. The transmission spectra are obtained using the finite element method (FEM). Since the thickness of the dielectric elastomer defect layer is controlled by applying an electric voltage, the frequencies of the defect bands can be tuned. A narrow pass band filter can be developed and designed by using the dielectric elastomer.

Original languageEnglish
Article number015011
JournalSmart Materials and Structures
Volume18
Issue number1
DOIs
Publication statusPublished - 2009 Apr 27

Fingerprint

Elastomers
elastomers
Bandpass filters
filters
Defects
Crystals
defects
crystals
Polymethyl Methacrylate
Aluminum
Polymethyl methacrylates
polymethyl methacrylate
Band structure
finite element method
plane waves
aluminum
Finite element method
expansion
Electric potential
electric potential

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Cite this

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The narrow pass band filter of tunable 1D phononic crystals with a dielectric elastomer layer. / Wu, Liang Yu; Wu, Mei Ling; Chen, Lien-Wen.

In: Smart Materials and Structures, Vol. 18, No. 1, 015011, 27.04.2009.

Research output: Contribution to journalArticle

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