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Showing 1–14 of 14 results
Advanced filters: Author: Manzhu Ke Clear advanced filters

  • Despite long-standing theoretical predictions in graphene, observation of satellite Dirac cones surrounding a central linear cone is elusive. Here, the authors report their observation in phononic crystals by designing dominant third-nearest-neighbor couplings.

    • Han Liu
    • Yuxiang Xi
    • Zhengyou Liu
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-8

  • Bulk and edge modes and their relation in topological materials is something researchers have been tried to harness for various applications. Here the authors provide a method to achieve chiral anomaly bulk states by applying boundary conditions to a topologically trivial crystal.

    • Mudi Wang
    • Qiyun Ma
    • C. T. Chan
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8

  • 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

  • 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

  • Recent theoretical works reveal that the topologically nontrivial exceptional points can guarantee the geometry-dependent skin effect, but it remains to be confirmed by experiments. Here the authors realize a reciprocal non-Hermitian phononic crystal with exceptional points, and observe the geometry-dependent skin effect.

    • Qiuyan Zhou
    • Jien Wu
    • Zhengyou Liu
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • Point gap is signature of non-Hermitian systems, but the experimental identification of nontrivial point gaps is elusive. Here, the authors use a Weyl phononic crystal to demonstrate that the point gap constituted by bulk and Fermi-arc surface states can be observed experimentally by a real-space field mapping technique and discover various skin effects and their evolutions.

    • Riyi Zheng
    • Jing Lin
    • Zhengyou Liu
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-9

  • Topological pump offers a new perspective on the construction and application of topological states. Based on higher-order topological corner pump, the authors demonstrate some interesting transport phenomena (e.g., topological splitting effect) in a 3D modulated phononic crystal with arbitrarily controllable pumping paths.

    • Zhenyu Wang
    • Liping Ye
    • Zhengyou Liu
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-7