Semchuk S. Features of phonon transport in stressed Si and Ge­based nanowires

Українська версія

Thesis for the degree of Doctor of Philosophy (PhD)

State registration number

0824U003305

Applicant for

Specialization

  • 104 - Фізика та астрономія

15-11-2024

Specialized Academic Board

PhD 6934

Taras Shevchenko National University of Kyiv

Essay

The dissertation presents a study of thermal transport in silicon¬ and germanium-based nanowires of various morphologies and the peculiarities of the strain impact on the thermal conductivity of SiGe nanowires. The dissertation consists of an introduction, four original chapters, general conclusions, a list of references, and an appendix. The introduction substantiates the relevance of the chosen research topic and formulates the aim of the dissertation, which is to establish the mechanisms of thermal transport in strained semiconductor nanowires based on silicon and germanium of various morphologies. The object of the study is the processes of phonon transport in one-dimensional nanostructures of silicon and germanium with structural inhomogeneities and/or fields of mechanical stresses. The subject of the study is silicon and germanium nanowires of different component compositions and morphologies.

Research papers

V.V. Kuryliuk, S.S. Semchuk, A.M. Kuryliuk, P.P. Kogutyuk Thermal conductivity of Si nanowires with an amorphous SiO2 shell: a molecular dynamics study // Ukr. J. Phys. – 2021. – Vol. 66, №5. – P. 399 – 405. https://doi.org/10.15407/ujpe66.5.399

S. Semchuk; V. Kuryliuk; D. Vernygora; A. Kuryliuk; T. Tsaregradskaya. Molecular Dynamics Simulation of the Uniaxial Tensile Test of Hollow­Core Silicon Nanowires // Proceedings of the 2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP). – 2021. – PP. 1­4. 10.1109/NAP51885.2021.9568398

V.V. Kuryliuk, S.S. Semchuk, K.V. Dubyk, R.M. Chornyi Structural features and thermal stability of hollow­core Si nanowires: A molecular dynamics study // Nano­Structures and Nano­Objects – 2022. – Vol. 29. – P. 100822 (8p.). https://doi.org/10.1016/j.nanoso.2021.100822

V. Kuryliuk, O. Tyvonovych, S. Semchuk. Impact of Ge clustering on the thermal conductivity of SiGe nanowires: atomistic simulation study // Phys. Chem. Chem. Phys. – 2023. – Vol.25. – P. 6263­6269. https://doi.org/10.1039/D2CP05185K

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