利用声黑洞扩展声子晶体的Bragg散射带隙

IF 2.6 4区物理与天体物理 Q2 PHYSICS, APPLIED

International Journal of Modern Physics B Pub Date : 2023-10-14 DOI:10.1142/s0217979224504010

Haofeng Liang, Xiao Liang, Jiaming Chu, Zhuo Zhou

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引用次数: 0

摘要

基于声黑洞对声波波长的压缩效应，设计了一种具有声黑洞特性的声子晶体。仿真结果表明，与不加ABH的声子晶体相比，加ABH的声子晶体第一带隙下限降低了127.8[公式:见文]Hz，带隙上限增加了694.4[公式:见文]Hz，带隙宽度增加了822.2[公式:见文]Hz。基于带隙形成的机理和ABH的声调制效应，讨论了带隙扩展的机理。分析了ABH的几何参数和材料参数对带隙的影响。该方法为优化声子晶体提供了一种新的途径，可为其设计提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Expanding the Bragg scattering bandgap of phononic crystals using acoustic black holes

In this paper, a phononic crystal with acoustic black hole (ABH) characteristics is designed based on the compression effect of ABHs on acoustic wavelengths. The simulation results show that the lower limit of the first bandgap of the phononic crystal with ABH is reduced by 127.8[Formula: see text]Hz, the upper limit is increased by 694.4[Formula: see text]Hz, and the bandgap width is increased by 822.2[Formula: see text]Hz compared with that of the phononic crystal without ABH. The mechanism of bandgap expansion is discussed based on the mechanism of bandgap formation and the acoustic modulation effect of the ABH. The influence of the geometric and material parameters of the ABH on the bandgap is analyzed. The ABHs offer a new way of optimizing phononic crystals, and this work can be used as a reference for their design.

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来源期刊

International Journal of Modern Physics B 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.80%

发文量

417

审稿时长

3.1 months

期刊介绍： Launched in 1987, the International Journal of Modern Physics B covers the most important aspects and the latest developments in Condensed Matter Physics, Statistical Physics, as well as Atomic, Molecular and Optical Physics. A strong emphasis is placed on topics of current interest, such as cold atoms and molecules, new topological materials and phases, and novel low dimensional materials. One unique feature of this journal is its review section which contains articles with permanent research value besides the state-of-the-art research work in the relevant subject areas.