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Showing 1–7 of 7 results
Advanced filters: Author: Qiangbing Guo Clear advanced filters

  • A two-dimensional van der Waals material, NbOCl2, that simultaneously exhibits near-unity linear dichroism (~99%) over 100 nm bandwidth in ultraviolet regime and large birefringence (0.26–0.46) within a wide visible–near-infrared transparency window is reported.

    • Qiangbing Guo
    • Qiuhong Zhang
    • Cheng-Wei Qiu
    Research
    Nature Photonics
    Volume: 18, P: 1170-1175

  • Van der Waals NbOCl2 crystal is a candidate platform for subwavelength thin film photon-pair sources. Here, the authors demonstrate generation of polarization entangled states from a two-layer stack of orthogonally oriented van der Waals crystal.

    • Qiangbing Guo
    • Yun-Kun Wu
    • Cheng-Wei Qiu
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • A van der Waals crystal, niobium oxide dichloride, with vanishing interlayer electronic coupling and considerable monolayer-like excitonic behaviour in the bulk, as well as strong and scalable second-order optical nonlinearity, is discovered, which enables a high-performance quantum light source.

    • Qiangbing Guo
    • Xiao-Zhuo Qi
    • Andrew T. S. Wee
    Research
    Nature
    Volume: 613, P: 53-59

  • The authors demonstrate ultra-broadband microscale optical dispersion in LiNbO3 crystals, enabling precise and robust on-demand dispersion engineering in free space, with strong potential for applications in informatics and spectroscopy.

    • Bo Zhang
    • Zhuo Wang
    • Jianrong Qiu
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • A new surface-directed crystallization mechanism enabled by the chemical and structural inhomogeneity of the glass substrate through self-limited nanocrystallization of glassy phase was proposed and demonstrated. Benefiting from the intricate interplays between nanoscale force and heterogeneous surface, the strategy offers new opportunities in the large-scale development of various metastable crystallization products and also serves practical purpose.

    • Shifeng Zhou
    • Binbin Zheng
    • Jianrong Qiu
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e245