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Showing 1–11 of 11 results
Advanced filters: Author: Ashok Keerthi Clear advanced filters

  • Flow through nanometer scale channels facilitates an unmasked study of water-surface molecular interactions. Here, Keerthi et al. show with conduits made from graphite and hexagonal boron nitride that strong hydrophobicity does not rule out enhanced stickiness and friction.

    • Ashok Keerthi
    • Solleti Goutham
    • Boya Radha
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Among double [n]helicenes, known for their simplicity and configurational stability when n exceeds 4, double [5]helicene imides remain underexplored. Here, the authors develop a stepwise synthetic route to access these diimides, as well as planar nanographene diimides via C-shaped mono-[5]helicene diimide, using benzannulation and Scholl reactions for progressive π-extension, reporting fluorescence quantum yields of up to 63% in solution and 32% in the solid state.

    • Vikas Sharma
    • Jacob Isaac
    • Ashok Keerthi
    ResearchOpen Access
    Communications Chemistry
    Volume: 8, P: 1-8

  • Nanofluidic memristors mimic brain-like memory using ion transport through confined spaces. Researchers demonstrate all four theoretical memristor types in 2D nanocapillary devices by varying experimental conditions, reveal their molecular origins, and model their behavior, advancing neuromorphic computing.

    • Abdulghani Ismail
    • Gwang-Hyeon Nam
    • Boya Radha
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-15

  • Ionic flow through ångström-scale channels facilitates selectivity beyond steric effects between ions of same charge and hydrated diameter. Here, with two-dimensional channels, the authors show that ion position in the channel influences selectivity.

    • Solleti Goutham
    • Ashok Keerthi
    • Boya Radha
    Research
    Nature Nanotechnology
    Volume: 18, P: 596-601

  • Slit-like nanochannels of pristine graphite and activated carbon, fabricated by van der Waals assembly of pristine or sculpted graphite crystals, enable comprehensive ionic response measurements and the systematic realization of their ion transport properties. These are attributed to optimal combinations of (mobile) surface charge and slippage effects at the channel wall surface in both pristine and activated nanochannels.

    • Theo Emmerich
    • Kalangi S. Vasu
    • Lydéric Bocquet
    Research
    Nature Materials
    Volume: 21, P: 696-702

  • Angstrom-scale two-dimensional channel devices can be assembled with precise control over their dimensions, as a single channel or hundreds of channels using layered crystals, and enable the measurement of angstrom-scale gas, ion and water fluidics.

    • Ankit Bhardwaj
    • Marcos Vinicius Surmani Martins
    • Ashok Keerthi
    Protocols
    Nature Protocols
    Volume: 19, P: 240-280

  • By functionalizing molecular graphene nanoribbons with stable spin-bearing nitronyl nitroxide radical groups, delocalized magnetic edge states are observed, with microsecond-scale spin coherence times.

    • Michael Slota
    • Ashok Keerthi
    • Lapo Bogani
    Research
    Nature
    Volume: 557, P: 691-695

  • A multi-parameter real time tracking setup that synchronizes intestinal circular and longitudinal muscle contractions, intraluminal pressure, and volume recordings to decipher the parameters influencing peristalsis and luminal discharge in mice.

    • Anusree Sasidharan
    • Breman Anil Peethambar
    • Sadasivan Vidyasagar
    ResearchOpen Access
    Communications Biology
    Volume: 6, P: 1-15