Investigation on Waveguide and Directional Transmission Properties of a Tunable Liquid-Solid Phononic Crystal Based on Rotation of Scatterer

被引：0

作者：

Wang, Kai ^{[1
]}

Yin, Jia-Hao ^{[2
]}

Cao, Lu ^{[1
]}

Guo, Peng-Yu ^{[1
]}

Fan, Guang-Teng ^{[1
]}

Qin, Jiang-Yi ^{[1
]}

Yang, Shuai ^{[3
,4
]}

机构：

[1] Acad Mil Sci, Natl Innovat Inst Def Technol, Beijing 100071, Peoples R China

[2] Univ New South Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

[3] Anyang Normal Univ, Sch Civil Engn & Architecture, Anyang 455000, Peoples R China

[4] Anyang Normal Univ, Henan Engn Technol Res Ctr Digital Intelligent Bld, Anyang 455000, Henan, Peoples R China

来源：

NANO | 2024年

基金：

中国国家自然科学基金;

关键词：

Phononic crystals; defect states; waveguide; equifrequency contour; directional transmission; BAND-GAPS;

D O I：

10.1142/S1793292024501327

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study presents a tunable phononic crystal (PnC) composed of liquid-solid components, demonstrating adjustable waveguiding and directional transmission capabilities through the rotation of embedded scatterers. A two-dimensional model featuring grooved steel rods in water is analyzed using finite element simulations to evaluate band structures and transmission spectra. To achieve the widest full band gap, a genetic algorithm is integrated to optimize the structural parameters. By examining a supercell with a central defect, wave localization is achieved, facilitating tunable waveguide formation. Analysis of equifrequency contours reveals that, at a scatterer rotation angle of 0(degrees), the structure enables directional transmission, with wave propagation preferentially aligned with specific crystal axes. This work pioneers a new strategy for designing tunable acoustic metamaterials with applications in advanced waveguiding and directed acoustic manipulation technologies.

引用

页数：10

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