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Conference paper

Experimental investigation of defect modes in tubular phononic crystals

In Proceedings of 11<sup>th</sup> International Conference on Metamaterials, Photonic Crystals and Plasmonics — 2021
From

Centre for Acoustic-Mechanical Microsystems, Centers, Technical University of Denmark1

Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark2

Department of Electrical Engineering, Technical University of Denmark3

In this contribution the use of defect modes in phononic crystals for sensing applications will be discussed on the basis of different practical realizations. As a specific example, experimental results of wave transmission through tubular phononic crystals will be compared for different materials and in the presence of different geometric defects to the ideal crystal, as well as to reference measurements through a corresponding hollow tube and solid cylinder.

Numerical results from finite element models validate the experimental data and are used to illustrate band gap suppression and defect modes.

Language: English
Year: 2021
Proceedings: META 2021
Types: Conference paper
ORCIDs: Lucklum, Frieder

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