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
收藏
页数：10
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