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Showing 1–13 of 13 results
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  • A photocurrent enhancement at the charge neutrality point is observed in graphene when the Fermi level matches the Dirac point.

    • Qiong Ma
    • Chun Hung Lui
    • Pablo Jarillo-Herrero
    Research
    Nature Nanotechnology
    Volume: 14, P: 145-150

  • Optical experiments on WSe2/MoSe2 heterobilayers reveal signatures of moiré trions, including interlayer emission with sharp lines and a complex charge-density dependence, features that differ markedly from those of conventional trions.

    • Erfu Liu
    • Elyse Barré
    • Chun Hung Lui
    Research
    Nature
    Volume: 594, P: 46-50

  • An exciton polaron is a quasiparticle composed of an exciton dressed with an electron-hole cloud, and this concept has been used to explain the ground excitonic states in charged monolayer transition metal dichalcogenides. Here the authors present experimental and theoretical evidence of exciton-polaron Rydberg states in monolayer MoSe2 and WSe2.

    • Erfu Liu
    • Jeremiah van Baren
    • Chun Hung Lui
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Monolayer graphene has no electronic band gap. Bilayer graphene does, and can be controlled by an electric field. And for trilayer graphene, infrared transmission measurements indicate both situations are possible depending on the stacking of the layers.

    • Chun Hung Lui
    • Zhiqiang Li
    • Tony F. Heinz
    Research
    Nature Physics
    Volume: 7, P: 944-947

  • Graphene, an atom-thin carbon sheet is interesting for its fundamental properties as well as for its possible applications in electronics, is not strictly two-dimensional. Microscopic corrugations, or ripples, have been observed in all graphene sheets so far. Direct experimental study of the physics of such ripples has been hindered by the lack of flat graphene layers. Ultraflat graphene is now achieved through its deposition on the atomically flat terraces of cleaved mica surfaces.

    • Chun Hung Lui
    • Li Liu
    • Tony F. Heinz
    Research
    Nature
    Volume: 462, P: 339-341

  • Heat treatment can transform some moiré superlattices into fully commensurate bilayers, where atoms in opposite layers align perfectly with each other. This structural transformation gives rise to markedly brighter interlayer excitons.

    • Chun Hung Lui
    News & Views
    Nature Materials
    Volume: 22, P: 1435-1436

  • Cheng et al. suggest that BRPF1 plays an oncogenic role in hepatocellular carcinoma (HCC), by controlling histone acetylation in the promoter regions of E2F2 and EZH2. Its high levels are correlated with poor survival in HCC patients, and targeting it might serve as a strategy for cancer treatment.

    • Carol Lai-Hung Cheng
    • Felice Hoi-Ching Tsang
    • Chun-Ming Wong
    ResearchOpen Access
    Communications Biology
    Volume: 4, P: 1-14