Results 21 to 30 of about 575 (159)
Inverse design of multi-band acoustic topology insulator based on deep learning
AIP Advances, 2023 The reverse design method of acoustic structure based on a deep learning algorithm has been developed as an important means of metamaterial design. In this paper, a multi-band acoustic topological insulator is designed, and the improved competitive ...
Yao Qin +4 more
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Acoustic topological Anderson insulators
, 2021 Recent breakthrough on topological Anderson insulators revealed the breakdown of the traditional perception that sufficiently strong disorder may induce the appearance of topological protected transport states instead of destruction. Although topological Anderson insulators have been observed in various time-reversal symmetry breaking systems, the ...
Liu, Hui +8 more
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Glided acoustic higher-order topological insulators based on spoof surface acoustic waves
New Journal of Physics, 2022 Higher-order topological insulator hosts both gapped edge states and in-gap corner states, which has garnered considerable attentions in the field of condensed matter physics, and most recently is further extended to the classical wave systems ...
Zichong Yue +5 more
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Nature Communications, 2020 Higher-order topological phenomenologies are usually observed separately, with each system giving rise to a specific type of topological insulator. Here, the authors realise a nonsymmorphic acoustic metacrystal where the first and the second band gap ...
Xiujuan Zhang +7 more
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Observation of higher-order non-Hermitian skin effect
Nature Communications, 2021 Though non-Hermitian physics has contributed toward the advance of research in quantum, electronic and classical systems, previous work focused on zero- or one-dimensional systems.
Xiujuan Zhang +4 more
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Acoustic Tunneling Study for Hexachiral Phononic Crystals Based on Dirac-Cone Dispersion Properties
Crystals, 2021 Acoustic tunneling is an essential property for phononic crystals in a Dirac-cone state. By analyzing the linear dispersion relations for the accidental degeneracy of Bloch eigenstates, the influence of geometric parameters on opening the Dirac-cone ...
Luyun Chen, Yong Liu, Hui Kong
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Acoustic suppressed topological refraction in valley sonic crystals
New Journal of Physics, 2022 We report both experimentally and numerically that an acoustic suppressed topological refraction is realized by two kagome-lattice valley sonic crystals (VSCs).
Bing-bing Wang +4 more
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Acoustic topological insulator by honeycomb sonic crystals with direct and indirect band gaps
New Journal of Physics, 2018 We report both experimentally and numerically that a flow-free pseudospin-dependent acoustic topological insulator (ATI) is realized by two honeycomb sonic crystals with direct and indirect band gaps.
Ding Jia +5 more
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Method to Derive the Hamiltonian of Acoustic Topological Crystalline Insulators [PDF]
Physical Review Applied, 2021 Acoustic systems that are without limitations imposed by the Fermi level have been demonstrated as a significant platform for the exploration of fruitful topological phases. By surrounding the nontrivial domain with trivial ``environment,'' the domain-wall topological states have been theoretically and experimentally demonstrated.
An-Yang Guan +3 more
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Fractality-induced topological phase squeezing and devil's staircase
Physical Review Research, 2023 We propose and experimentally demonstrate the first example of Chern fractal insulators in an acoustic Sierpinski lattice. Through introducing fractality into the well-known Haldane model, we find that the topological phase diagram is significantly ...
Junkai Li +4 more
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