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Showing 1–13 of 13 results
Advanced filters: Author: Zhengyou Zhang Clear advanced filters

  • 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

  • A second-order topological Weyl semimetal based on a 3D-printed acoustic crystal, exhibiting Weyl points, Fermi arc surface states, and hinge states, has been experimentally demonstrated.

    • Qiang Wei
    • Xuewei Zhang
    • Suotang Jia
    Research
    Nature Materials
    Volume: 20, P: 812-817

  • 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 key challenge in robotics is leveraging pre-training as a form of knowledge to generate movements. The authors propose a general learning framework for reusing pre-trained knowledge across different perception and task levels. The deployed robots exhibit lifelike agility and sophisticated game-playing strategies.

    • Lei Han
    • Qingxu Zhu
    • Zhengyou Zhang
    Research
    Nature Machine Intelligence
    Volume: 6, P: 787-798

  • Higher-order topological acoustic metamaterials on kagome lattices, which host topologically protected corner states, can confine sound at corners. This may lead to applications of acoustic metamaterials in local acoustic field enhancement, trapping and manipulating of particles, and acoustic sensing and probing.

    • Zhengyou Liu
    News & Views
    Nature Materials
    Volume: 18, P: 98-99

  • 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

  • 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