Akademik Veri Yönetim Sistemi
Physics and Astronomy Reports, cilt.1, sa.1, ss.27-31, 2023 (Hakemli Dergi)
In this study, we examined the dispersion profiles and surface acoustic wave attenuation properties of polygonal cavity-type phononic crystals in relation to changes in the number of vertices. Both band analysis and transmission spectrum calculations are performed using finite element method simulations. The findings indicate an increase in the number of vertices of phononic crystal results in an increase in local resonance bandgap frequencies and corresponding transmission peaks. Furthermore, the phononic crystal bandgap widens from 7.3 MHz to 11.1 MHz as the number of vertices increases from 3 to 14, as demonstrated by the obtained dispersion profiles. Comparable features are observed in the transmission spectra for alternating polygonal cavity-type phononic crystal periodic grooves. Additionally, the ability of the surface acoustic wave attenuation is affected by the phononic crystal shape, and the resonance frequency of the phononic crystals can be adjusted by changing the number of vertices.