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26 papers
Thermal transport evolution due to nanostructural transformations in Ga-doped indium-tin-oxide thin films
Alexandr Cocemasov, Vladimir Brinzari, Do-Gyeom Jeong +4
We report on a comprehensive theoretical and experimental investigation of thermal conductivity in indium-tin-oxide (ITO) thin films with various Ga concentrations (0-30 at. %) dep…
Energetic, structural and electronic features of Sn-, Ga-, O-based defect complexes in cubic In2O3
Alexandr I. Cocemasov, Vladimir I. Brinzari, Denis L. Nika
Defect energy formation, lattice distortions and electronic structure of cubic In2O3 with Sn, Ga and O impurities were theoretically investigated using density functional theory. D…
Thermal transport in semiconductor nanostructures, graphene and related two-dimensional materials
Alexandr I. Cocemasov, Calina I. Isacova, Denis L. Nika
We review experimental and theoretical results on thermal transport in semiconductor nanostructures (multilayer thin films, core/shell and segmented nanowires), single- and few-lay…
Ultra-low Thermal Conductivity of Nanogranular Indium Tin Oxide Films Deposited by Spray Pyrolysis
Vladimir I. Brinzari, Alexandr I. Cocemasov, Denis L. Nika +1
The authors have shown that nanogranular indium tin oxide (ITO) films, deposited by spray pyrolysis on silicon substrate, demonstrate ultralow thermal conductivity ~ 0.84 +/-0.12 W…
Direct Observation of Acoustic Phonon Confinement in Free-Standing Semiconductor Nanowires
Fariborz Kargar, Bishwajit Debnath, Kakko Joona-Pekko +5
Similar to electron waves, the phonon states in semiconductors can undergo changes induced by external boundaries. Modification of acoustic phonon spectrum in structures with perio…
Phonons and Thermal Transport in Graphene and Graphene-Based Materials
Denis L. Nika, Alexander A. Balandin
A discovery of the unusual thermal properties of graphene stimulated experimental, theoretical and computational research directed at understanding phonon transport and thermal con…