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Showing 1–13 of 13 results
Advanced filters: Author: Chunyin Qiu Clear advanced filters

  • Despite the growing interest in Floquet systems, the role of the harmonics of the time modulation remains unexplored. Here, authors introduce an harmonic non-Hermitian skin effect and provide its experimental demonstration with an acoustic implementation, achieving controllable switching between uniform and opposite sound localization at the boundaries.

    • Qicheng Zhang
    • Liwei Xiong
    • Chunyin Qiu
    ResearchOpen Access
    Nature Communications
    P: 1-9

  • Here, by constructing a heterostructure with sonic crystals, a topological waveguide is realized by the authors. The waveguide states feature gapless dispersion, momentum-valley locking, immunity against defects, and a high capacity for energy transport.

    • Mudi Wang
    • Wenyi Zhou
    • Zhengyou Liu
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6

  • Novel topological quasiparticles have attracted many interests recently. Here, He et al. observe quadratic Weyl points and identify double-helicoid surface arcs in sound waves traveling in a three-dimensional chiral metacrystal.

    • Hailong He
    • Chunyin Qiu
    • Zhengyou Liu
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6

  • Momentum-band topology is an emerging concept in multidisciplinary physics. Here, authors present direct evidence for the momentum-band topology and time interface states in a PT-symmetric Floquet lattice, providing the first comprehensive examination of the temporal bulk-boundary correspondence.

    • Shuaishuai Tong
    • Qicheng Zhang
    • Chunyin Qiu
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • The authors constructed ideal acoustic metamaterials to realize non-abelian braiding of band nodes and provided the first compelling experimental evidence, at the wavefunction level, for the creation, collision, braiding, and repulsion of band nodes.

    • Huahui Qiu
    • Qicheng Zhang
    • Chunyin Qiu
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • A graphene-like two-dimensional sonic crystal, under uniaxial deformation, experiences a giant uniform pseudomagnetic field. This leads to the quantization of the cyclotron orbits—a kind of acoustic Landau level—that is observed here.

    • Xinhua Wen
    • Chunyin Qiu
    • Zhengyou Liu
    Research
    Nature Physics
    Volume: 15, P: 352-356

  • Valleytronics — exploiting a system’s pseudospin degree of freedom — is being increasingly explored in sonic crystals. Now, valley transport of sound is reported for a macroscopic triangular-lattice array of rod-like scatterers in a 2D air waveguide.

    • Jiuyang Lu
    • Chunyin Qiu
    • Zhengyou Liu
    Research
    Nature Physics
    Volume: 13, P: 369-374

  • Flexible wave manipulations are crucial in the development of application for topological insulators. By stacking a 2D network of coupled acoustic resonators the authors demonstrate a 3D acoustic topological insulator with arbitrarily controllable dislocation paths.

    • Liping Ye
    • Chunyin Qiu
    • Zhengyou Liu
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • A recurring theme in physics has been the discovery of distinctive phases of matter. Here, the authors propose a general recipe for constructing projective mirror symmetry and report an experimental realization of mirror Chern insulators in spinless systems.

    • Tianzi Li
    • Luohong Liu
    • Chunyin Qiu
    ResearchOpen Access
    Communications Physics
    Volume: 6, P: 1-9