Large band gaps in elastic phononic crystals with air inclusions

Yun Lai; Zhao Qing Zhang

doi:10.1063/1.1625998

Large band gaps in elastic phononic crystals with air inclusions

Yun Lai^*, Zhao Qing Zhang

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal Article › peer-review

54 Citations (Scopus)

Abstract

Creation of a large band gap by inserting air inclusions in a two-component elastic phononic crystal with small density contrast and filling fraction was studied. The shear potential energy of the first optical band was suppressed and their frequencies were lowered by the positions of the insertion. A two-dimensional system consisting of aluminum cylinders in a triangular lattice with a filling fraction of 0.145 embedded in an epoxy host was demonstrated. The results show that the insertion of air cylinders is capable of creating a large elastic band gap with gap/midgap ratio δω/ω_c=0.53.

Original language	English
Pages (from-to)	3900-3902
Number of pages	3
Journal	Applied Physics Letters
Volume	83
Issue number	19
DOIs	https://doi.org/10.1063/1.1625998
Publication status	Published - 10 Nov 2003

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10.1063/1.1625998

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title = "Large band gaps in elastic phononic crystals with air inclusions",

abstract = "Creation of a large band gap by inserting air inclusions in a two-component elastic phononic crystal with small density contrast and filling fraction was studied. The shear potential energy of the first optical band was suppressed and their frequencies were lowered by the positions of the insertion. A two-dimensional system consisting of aluminum cylinders in a triangular lattice with a filling fraction of 0.145 embedded in an epoxy host was demonstrated. The results show that the insertion of air cylinders is capable of creating a large elastic band gap with gap/midgap ratio δω/ωc=0.53.",

author = "Yun Lai and Zhang, \{Zhao Qing\}",

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T1 - Large band gaps in elastic phononic crystals with air inclusions

AU - Lai, Yun

AU - Zhang, Zhao Qing

PY - 2003/11/10

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N2 - Creation of a large band gap by inserting air inclusions in a two-component elastic phononic crystal with small density contrast and filling fraction was studied. The shear potential energy of the first optical band was suppressed and their frequencies were lowered by the positions of the insertion. A two-dimensional system consisting of aluminum cylinders in a triangular lattice with a filling fraction of 0.145 embedded in an epoxy host was demonstrated. The results show that the insertion of air cylinders is capable of creating a large elastic band gap with gap/midgap ratio δω/ωc=0.53.

AB - Creation of a large band gap by inserting air inclusions in a two-component elastic phononic crystal with small density contrast and filling fraction was studied. The shear potential energy of the first optical band was suppressed and their frequencies were lowered by the positions of the insertion. A two-dimensional system consisting of aluminum cylinders in a triangular lattice with a filling fraction of 0.145 embedded in an epoxy host was demonstrated. The results show that the insertion of air cylinders is capable of creating a large elastic band gap with gap/midgap ratio δω/ωc=0.53.

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UR - https://openalex.org/W2004095924

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DO - 10.1063/1.1625998

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VL - 83

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

ER -

Large band gaps in elastic phononic crystals with air inclusions

Abstract

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