Dvornichenko A. Self-organisation of adsorbate with formation of nano-sized structures at condensation and apitaxy

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0525U000451

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

21-11-2025

Specialized Academic Board

Д 55.051.02

Sumy State University

Essay

This dissertation develops a comprehensive theoretical framework for describing the growth of surface structures during condensation and epitaxy, emphasizing the control over their morphology and statistical characteristics. The study investigates various factors influencing the dynamics of surface structure formation, including anisotropy in surface and vertical diffusion, adsorbate-adsorbate and adsorbate-substrate interactions, temperature fluctuations on the growing surface, and various types of environmental fluctuations. These factors are explored using theoretical methods and numerical simulations. The main results are related to the effect of the vertical diffusion coefficient on adsorbate concentration, the transition of surface structures from isolated pits to islands, and the role of interaction energy in inducing self-organization. It was found that in plasma–condensate systems electric fields alter morphology by affecting the size and shape of surface structures. The influence of fluctuation intensity and frequency on phase transitions and surface morphology was investigated, revealing that increasing fluctuations accelerates the transition to dense phases. The model also highlights the impact of temperature variations during adsorption/desorption processes, showing how thermal changes affect structure formation and growth rate. The work emphasizes the roles of electric fields, anisotropic diffusion, and temperature in controlling the dynamics of surface structures, providing new insights into the behavior of thin films.

Research papers

D. O. Kharchenko, V. O. Kharchenko, T. Zhylenko, A. V. Dvornichenko. A study of pyramidal islands formation in epitaxy within the generalized phasefield model. European Physical Journal B, 86, 175 (2013)

V. O. Kharchenko, D. O. Kharchenko, A. V. Dvornichenko. Statistical properties of nanosized clusters on a surface in overdamped stochastic reaction- Cattaneo systems. Surface Science, 630, 158 (2014)

V. O. Kharchenko, D. O. Kharchenko, A. V. Dvornichenko. Scaling properties of pyramidal islands formation process at epitaxial growth. European Physical Journal B, 88, 3 (2015)

V. O. Kharchenko, D. O. Kharchenko, A. V. Dvornichenko. Thermal effects in nano-sized adsorbate islands growth processes at vapor deposition. Physica A, 444, 689 (2016)

V. O. Kharchenko, A. V. Dvornichenko, V. N. Borysiuk. Formation of adsorbate structures induced by external electric field in plasma-condensate systems. European Physical Journal B, 91, 93 (2018)

V. O. Kharchenko, A. V. Dvornichenko. Nano-structured thin films growth in stochastic plasma-condensate systems. European Physical Journal B, 92, 57 (2019)

A. V. Dvornichenko, D. O. Kharchenko, I. O. Lysenko, V. O. Kharchenko. Islands growth control in adsorptive multilayer plasma-condensate systems. Journal of Crystal Growth, 514, 1 (2019)

V. O. Kharchenko, A. V. Dvornichenko, T. I. Zhylenko. Nano-sized islands growth control in plasma-condensate devices. Applied Nanoscience, 10, 2535 (2020)

A. V. Dvornichenko, V. O. Kharchenko. Scaling properties of the growing monolayer on the disordered substrate. Physics Letters A, 384, 126329 (2020)

A. V. Dvornichenko, V. O. Kharchenko, D. O. Kharchenko. Electromigration- Induced Formation of Percolating Adsorbate Islands During Condensation from the Gaseous Phase: A Computational Study. Beilstein J. Nanotechnol., 12, 694 (2021)

A. V. Dvornichenko, V. O. Kharchenko, D. O. Kharchenko. Impact of adsorbate-substrate interaction on nano-structured thin films growth during low-pressure condensation. Beilstein J. Nanotechnol., 16, 473 (2025)

В. О. Харченко, Д. О. Харченко, I. О. Лисенко, С. В. Кохан, В. В. Янов- ський, А. В. Дворниченко. Моделювання процесiв формування пiрамi- дальних структур при епiтаксiяльному ростi. Наносистеми, наноматерi- али, нанотехнологiї, 13, 577, (2015)

В. О. Харченко, Д. О. Харченко, С. В. Кохан, В. В. Яновський, А. В. Двор- ниченко. Формування нанорозмiрних структур адсорбату у процесах конденсацiї з газової фази. Наносистеми, наноматерiали, нанотехнологiї, 14, 47, (2016)

В. О. Харченко, В. В. Яновський, А. В. Дворниченко. Формування на- норозмiрних структур адсорбату в процесах конденсацiї з газової фази з урахуванням температурних ефектiв. Металофiз. новiтнi технол., 38, 205 (2016)

A. V. Dvornichenko, V. O. Kharchenko, D. O. Kharchenko. Transitions from low-density state towards high-density state in stochastic bistable plasmacondensate systems. Condensed Matter Physics, 21, 43001 (2018)

V. O. Kharchenko, A. V. Dvornichenko, D. O. Kharchenko. Noise induced effects at nano-structured thin films growth during deposition in plasma-condensate devices. Condensed Matter Physics, 23, 33001 (2020)

А. В. Дворниченко, Д. О. Харченко, В. О. Харченко. Моделювання ди- намiки формування та росту нанорозмiрних поверхневих структур в си- стемах «плазма–конденсат». Наносистеми, наноматерiали, нанотехноло- гiї, 18, 775, (2020)

А. В. Дворниченко, В. О. Харченко, Н. М. Манько. Вплив дифузiї ада- томiв мiж шарами на структурування зростаючої тонкої плiвки пiд час конденсацiї. Металофiз. новiтнi технол., 43, 289 (2021)

A. V. Dvornichenko. Electromigration effects at epitaxial growth of thin films: Phase-field modeling. Ukr. J. Phys., 66, 439 (2021)

A. V. Dvornichenko. Influence of Interactions between Adsorbate and Substrate on the Statistical Properties of Surface Structures at Condensation. J. Nano- Electron. Phys., 17, 02005 (2025)

А. В. Дворниченко, В. О. Харченко, Д. О. Харченко. Моделювання са- моорганiзацiї адсорбату при конденсацiї та епiтаксiї. (Сумський держав- ний унiверситет, Суми, 2020)

Files

Similar theses