Disordered hyperuniform elastic waveguide with low deformation-loss  

作　　者：PAN ZhangQi TANG HanChuan ZANG JianFeng 

机构地区：[1]School of Integrated Circuits and Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China [2]The State Key Laboratory of Intlligent Manufacturing Equipment and Technology,Huazhong Universiy of Science and Technology Wuhan 430074,China

出　　处：《Science China(Technological Sciences)》2024年第12期3783-3790,共8页中国科学(技术科学英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.T2350001 and 52173280);China Postdoctoral Science Foundation(Grant No.2022M711256)。

摘　　要：The deformation-loss of waveguides is a critical element that hinders the application range.Crystal waveguides have been studied for the construction of anti-deformation waveguides.However,the bandwidth of crystal waveguides is strictly reliant on the crystal lattice's periodicity.In case the deformation is extreme,and the crystal lattice is drastically altered,the bandwidth will be significantly diminished,and transmission loss will surge.Here,we report an elastic waveguide design based on the disordered hyperuniform(DH)distribution with as low as about 20%bandwidth loss under deformations with an average strain of approximately 10%.In contrast,the phononic crystal elastic waveguide(PCEWG)exhibits an average reduction of 50%for the same degree of deformation.This is demonstrated through simulations under four different deformation conditions:firstorder bending,second-order bending,compressing and stretching.A theoretical explanation is provided through the calculation of structural factors.Choosing soft materials as the matrix and explaining the mechanism through elastic waves,we present a promising avenue for communication through the human body.

关 键 词：WAVEGUIDE deformation loss disordered hyperuniform METAMATERIALS soft materials 

分 类 号：TB34[一般工业技术—材料科学与工程]