Results 141 to 150 of about 575 (159)

Observation of an acoustic non-Hermitian topological Anderson insulator

Science China Physics, Mechanics & Astronomy, 2023
The interaction of band topology and disorder can give rise to intriguing phenomena. One paradigmatic example is the topological Anderson insulator, whose nontrivial topology is induced in a trivial system by disorders. In this study, we investigate the effect of purely non-Hermitian disorders on topological systems using a one-dimensional acoustic ...
Gu, Z, Gao, H, Xue, H, Wang, D, Guo, J, Su, Z, Zhang, B, Zhu, J   +7 more
openaire   +3 more sources

Acoustic higher-order topological insulators

The Journal of the Acoustical Society of America, 2019
The concept of topological insulators has recently been transferred into acoustics by designing and constructing acoustic analogues of topological insulators, which nowadays are widely called as “acoustic topological insulators.” As dictated by the conventional bulk-boundary correspondence principle, the topologically nontrivial band structure in a d ...
openaire   +1 more source

Temperature-controlled tunable underwater acoustic topological insulators

Journal of Applied Physics, 2019
Topological insulators provide a new route to design acoustic metamaterials, which can exhibit novel propagation properties. However, most of the current topological acoustic metamaterials are characterized by a passive response and operated at fixed frequency ranges, and there are few reports on the effect of temperature of water on acoustic ...
Hongqing Dai, Baizhan Xia, Dejie Yu
openaire   +1 more source

Acoustic Higher‐Order Topological Insulators Induced by Orbital‐Interactions

Advanced Materials
AbstractThe discovery of higher‐order topological insulator metamaterials, in analogy with their condensed‐matter counterparts, has enabled various breakthroughs in photonics, mechanics, and acoustics. A common way of inducing higher‐order topological wave phenomena is through pseudo‐spins, which mimic the electron spins as a symmetry‐breaking degree ...
Feng Gao, Yu‐Gui Peng, Xiao Xiang, Xiang Ni, Chen Zheng, Simon Yves, Xue‐Feng Zhu, Andrea Alù   +7 more
openaire   +2 more sources

Multi-band acoustic topological insulator

Materials Today Physics, 2022
Zhen Huang, Jiu Hui Wu, Yunzhong Lei, Chongrui Liu, Fuyin Ma   +4 more
openaire   +1 more source

Controllable and multi-band acoustic metamaterial topological insulators

Journal of Physics D: Applied Physics
Abstract The valley degrees of freedom, representing quantum states of energy extremes in momentum space, are introduced into the acoustic system, and the valley topological insulator analogs of the quantum valley Hall effect can control the sound wave to observe topological valley transport against backscattering in domain walls of ...
Yuanbo Wang, Muchun Di, Changlin Ding, Yibao Dong, Shilong Zhai, Chunrong Luo, Xiaopeng Zhao   +6 more
openaire   +1 more source

Acoustic spin-Chern topological Anderson insulators

Physical Review B, 2023
Hui Liu, Boyang Xie, Haonan Wang, Wenwei Liu, Zhancheng Li, Hua Cheng, Jianguo Tian, Zhengyou Liu, Shuqi Chen   +8 more
openaire   +1 more source

Experimental demonstration of a reconfigurable acoustic second-order topological insulator using condensed soda cans array

Applied Physics Letters, 2021
, Ying Cheng, Zhiwang Zhang
exaly  

Creating Designs of Acoustic Topological Insulators Though Topology Optimization

SSRN Electronic Journal, 2020
Yafeng Chen, Fei Meng, Xiaodong Huang
openaire   +1 more source

Pseudospin-layer coupled edge states in an acoustic topological insulator

Applied Physics Letters, 2023
Xin-Ye Zou, Jian-Chun Cheng, Chang-Chun Wang   +2 more
exaly