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Showing 1–17 of 17 results
Advanced filters: Author: Kai-Qiang Lin Clear advanced filters

  • Underpotential deposition (UPD) is important to modify the surface properties of nanocrystals. Here, the authors show the application of in situ electrochemical dark field spectroscopy in identifying the UPD processes of silver on different facets of gold nanocrystals at the single nanoparticle level.

    • Shu Hu
    • Jun Yi
    • Bin Ren
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • High-energy interlayer excitons in van der Waals semiconducting transition metal dichalcogenides lie far above the bandgap and emit in the ultraviolet range.

    • Kai-Qiang Lin
    • Paulo E. Faria Junior
    • John M. Lupton
    Research
    Nature Nanotechnology
    Volume: 19, P: 196-201

  • Quantum interference between electronic pathways is generally difficult to observe in solid-state systems. Such interference is, however, now characterized in the second-harmonic generation from transition metal dichalcogenides, even at room temperature.

    • Kai-Qiang Lin
    • Sebastian Bange
    • John M. Lupton
    Research
    Nature Physics
    Volume: 15, P: 242-246

  • Here, the authors combine theory and photoluminescence measurements on WSe2 bilayers and demonstrate the electrical tunability of the trion energy landscape, by showing that an out-of-plane electric field modifies the energetic ordering of the lowest lying trion states.

    • Raul Perea-Causin
    • Samuel Brem
    • Ermin Malic
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Here, the authors observe tightly bound, valley-polarized, UV-emissive trions in monolayer transition metal dichalcogenide transistors. These are quasiparticles composed of an electron from a high-lying conduction band with negative effective mass, a hole from the first valence band, and an additional charge from a band-edge state.

    • Kai-Qiang Lin
    • Jonas D. Ziegler
    • John M. Lupton
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8

  • The supercurrent diode effect was recently observed in a Nb/V/Ta superlattice thin film with Rashba-type spin-orbit coupling. Here, the authors observe this effect in few-layer NbSe2 crystals driven by valley-Zeeman-type spin-orbit coupling and find that the effect is proportional to out-of-plane magnetic field.

    • Lorenz Bauriedl
    • Christian Bäuml
    • Nicola Paradiso
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • The radical C–F cleavage of fluoroalkanes offers a valuable method for the synthesis of fluorinated products. Here, photoredox catalysis promotes tandem intermolecular defluoroalkylation/intramolecular heteroaryl migration of unactivated alkenes to yield difluorobenzyl ketones, proposed to proceed via a radical mechanism.

    • Xin Yuan
    • Kai-Qiang Zhuang
    • Kai Guo
    ResearchOpen Access
    Communications Chemistry
    Volume: 3, P: 1-8

  • Here, the authors report on evidence of an excitonic species formed by electrons in high-energy conduction band states with a negative effective mass, explaining previous observations of quantum interference phenomena in two-dimensional semiconductors.

    • Kai-Qiang Lin
    • Chin Shen Ong
    • John M. Lupton
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Here, the authors report on the large twist-angle susceptibility of excitons involving upper conduction bands in transition metal dichalcogenide bilayers. These high-lying excitons couple with band-edge excitons, and give rise to nonlinear quantum-optical processes that become tuneable by twisting.

    • Kai-Qiang Lin
    • Paulo E. Faria Junior
    • John M. Lupton
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Probing inevitable defects in two- dimensional materials is challenging. Here, the authors tackle this issue by using tip-enhanced Raman spectroscopy (TERS) to obtain distinctly different Raman features of edge defects in atomically thin MoS2, and further probe their unique electronic properties as well as identify the armchair and zigzag edges.

    • Teng-Xiang Huang
    • Xin Cong
    • Bin Ren
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-8

  • The crystallographic orientation of monolayers in van der Waals multi-layers controls their electronic and optical properties. Here the authors show how the twist angle affects Coulomb correlations governing the internal structure and the mutual interaction of excitons in homobilayers of WSe2.

    • Philipp Merkl
    • Fabian Mooshammer
    • Rupert Huber
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • Overnutrition has been linked to increased risk of cancer. Here, the authors show that exceeding nutrients suppress Enoyl-CoA hydratase-1 (ECHS1) activity by inducing its acetylation resulting in accumulation of fatty acids and branched-chain amino acids and oncogenic mTOR activation.

    • Ya-Kun Zhang
    • Yuan-Yuan Qu
    • Wei Xu
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-16