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Showing 1–10 of 10 results
Advanced filters: Author: Qiaoxia Xing Clear advanced filters

  • Layered materials governed by van der Waals (vdW) interactions offer opportunities for interlayer tuning of the materials' properties. Here, the authors demonstrate that in-plane tensile strain can effectively tune the vdW interactions of few-layered black phosphorus and weaken its interlayer coupling even though the sample shrinks in the vertical direction.

    • Shenyang Huang
    • Guowei Zhang
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • Anisotropic light-matter excitations in van der Waals materials are expected to have an impact on nanophotonics applications. Here, the authors report the observation of canalized in-plane mid-infrared plasmons in the semimetallic phase of WS2 and demonstrate their electrical tunability via ion intercalation.

    • Qiaoxia Xing
    • Jiasheng Zhang
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • Naturally occurring hyperbolic polaritons exist in a class of layered materials. Here, the authors show evidence, via optical spectroscopy, of hyperbolic exciton-polaritons in phosphorene, originating from its in-plane anisotropy and strong exciton resonances.

    • Fanjie Wang
    • Chong Wang
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Here, the authors determine the exciton polarizabilities for 3- to 11-layer black phosphorus via frequency-resolved photocurrent measurements on dual-gate devices, and unveil the exciton response for higher-index sub-bands under the gate electrical field, as well as a carrier screening effect in thicker samples.

    • Yuchen Lei
    • Junwei Ma
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • In-plane hyperbolic phonon polaritons in α-MoO3 crystals hold promise for terahertz (THz) and longwave infrared (LWIR) photonic applications, but their coupling with far-field excitations remains challenging. Here, the authors report the fabrication of α-MoO3 ribbon arrays that can be applied as tunable THz and LWIR filters and polarizers.

    • Wuchao Huang
    • Thomas G. Folland
    • Shaozhi Deng
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-12

  • Here, arrays of 2H-TaSe2 nanoribbons are shown to exhibit a broadband plasmonic response that can be tuned from THz to telecom range. These localized plasmons can also couple to charge density wave excitations, offering insights on the physics of plasmonic excitations in 2D correlated materials.

    • Chaoyu Song
    • Xiang Yuan
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-10

  • For many two-dimensional semiconductors, such as MoS2, the exciton absorption increases with thickness. Here, the authors show that, in black phosphorus, less material absorbs more light due to exciton resonances.

    • Guowei Zhang
    • Shenyang Huang
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • Hyperbolic plasmonic surfaces supporting highly directional propagating plasmon-polaritons have been realized in artificial metamaterials. Here, the authors demonstrate experimentally a hyperbolic plasmonic surface naturally occurring in thin films of WTe2, a type-II Weyl semimetal with layered structure.

    • Chong Wang
    • Shenyang Huang
    • Hugen Yan
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9