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Showing 1–7 of 7 results
Advanced filters: Author: Krishna P. Dhakal Clear advanced filters

  • Controlling the stereoselectivity of radical reactions remains a major challenge due to the high reactivity of free radicals. Now it has been shown that asymmetric geminate recasting—a catalytic process in which radicals recombine after bond cleavage—can be used to produce chiral sulfur centres through photocatalytic deracemization of sulfinamides.

    • Arka Porey
    • Ramon Trevino
    • Oleg V. Larionov
    Research
    Nature Chemistry
    Volume: 17, P: 1862-1870

  • Here, the authors report the emergence of dark-excitons in transition-metal-dichalcogenide heterostructures that strongly rely on the stacking sequence, i.e., momentum-dark K-Q excitons located exclusively at the top layer of the heterostructure.

    • Riya Sebait
    • Roberto Rosati
    • Young Hee Lee
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • ‘Hardy’ Helicobacter pylori ecospecies shares the ancestry of ‘Ubiquitous’ H. pylori from the same region in most of the genome but has nearly fixed single-nucleotide polymorphism differences in 100 genes.

    • Elise Tourrette
    • Roberto C. Torres
    • Daniel Falush
    ResearchOpen Access
    Nature
    Volume: 635, P: 178-185

  • We present the degradation behaviors and mechanisms of CVD-grown monolayer MoS2 crystals relevant to bioabsorbable electronics, triggered and extended based on the intrinsic defects such as grain boundaries and point defects for their high chemical reactivity caused by broken lattice and dangling bonds. Higher misorientation angle leads to higher degradation speed. This work paves the way for lifetime modulation and bioabsorbable device application by using 2D materials.

    • Xiang Chen
    • Sachin M. Shinde
    • Jong-Hyun Ahn
    ResearchOpen Access
    NPG Asia Materials
    Volume: 10, P: 810-820

  • NaCl-assisted APCVD technique to synthesize multi-stacked MoS2 crystals with different stacking orientations and shape has been developed. We found that the stacking orientation of multi-stacked MoS2 crystals shows the underlying variation in the crystalline phases, symmetry inversion, spin–orbit coupling and interlayer interactions through intensive optical study based on Raman spectroscopy, PL spectroscopy and nonlinear technique of FWM correlated SHG imaging technique. Our study based on the crystals with different shape and multiple stacking configurations provide a new avenue for the possibilities of future optoelectronic devices.

    • Sachin M Shinde
    • Krishna P Dhakal
    • Jong-Hyun Ahn
    ResearchOpen Access
    NPG Asia Materials
    Volume: 10, P: e468