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Showing 1–5 of 5 results
Advanced filters: Author: Michael Fardis Clear advanced filters

  • Structural and morphological control of crystalline nanoparticles is crucial in heterogeneous catalysis. Applying DFT-assisted solid-state NMR spectroscopy, we determine the surface crystal and electronic structure of Ni2P nanoparticles, unveiling NMR nanocrystallography as an emerging tool in facet-engineered nanocatalysts.

    • Wassilios Papawassiliou
    • José P. Carvalho
    • Andrew J. Pell
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-11

  • The detection of topological states is restricted to limited experimental tools. Here, the authors apply broadband solid-state 125Te nuclear magnetic resonance on Bi2Te3 nanoplatelets uncovering signals distinguishing edge Dirac electrons and bulk electrons.

    • Wassilios Papawassiliou
    • Aleksander Jaworski
    • Georgios Papavassiliou
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • Molecular motion in nanosized pores can be extremely complex. Here, NMR diffusion experiments in different relaxation windows and molecular dynamics simulations suggest an unusual dynamic molecular ordering when an ionic liquid is confined in nanoporous silica.

    • Marina Karagianni
    • Lydia Gkoura
    • Georgios Papavassiliou
    ResearchOpen Access
    Communications Materials
    Volume: 4, P: 1-10

  • Bi-layer intercalation in Bi2Se3 nanoplatelets gives rise to an intriguing crystal structure comprised of randomly stacked Bi2Se3 and Bi2Se2. Detailed conduction electron spin resonance (CESR) and AC/DC magnetization studies prove that controlling Bi intercalation results in fine tuning the two-dimensional electron gas parabolic Rashba states, which enables the appearance of extraordinary orbital magnetism, through the coupling of the spin and orbital degrees of freedom. The methodology presented herein provides a unique and simple way for efficient spin engineering, with important potential applications.

    • Hae Jin Kim
    • Marios S Katsiotis
    • Georgios Papavassiliou
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e271