Generation of a mode in phononic crystal based on 1D/2D structures

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Researchers

Research units

  • Adam Mickiewicz University in Poznań

Abstract

The modification of phononic crystals by surface structuring allows obtaining a new parameter describing the dynamics of the structure produced in this way. We have investigated the dispersion relation of surface acoustic waves propagating in a phononic material which is based on nanometer-scale surface modulation using interconnected one-dimensional array of stripes and a two-dimensional array of pillars. The influence of these two array components on the dispersion relation has been determined experimentally (Brillouin light scattering) and theoretically (Finite Element Method). The interaction of these two nanostructures supports a new mode which is not observed in independent structures of pillars and stripes. The influence of the relative position of these two nanostructures on the frequency of the new mode has been determined.

Details

Original languageEnglish
Article number106146
Pages (from-to)1-7
Number of pages7
JournalULTRASONICS
Volume106
Publication statusPublished - Aug 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • Brillouin scattering spectroscopy, Finite Element Method, Phononic, Surface phonons

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