Master'sOpen Access

Ayrık biriktirme modellerinin simülasyonunda gelişmeler

2021
0 views
0 downloads
Advisor: Doç. Dr. Fatih Ömer İlday

Abstract (EN)

The main purpose of this work is to describe the surface growth phenomena. Initially, we give a brief introduction to the analytical studies, in particular, done by differential equations such as Edward-Wilkinson and Kardar-Parisi-Zhang equations, and then introduce the discrete surface growth models as a means to describe these phenomena with a restricted number of rules. The universality properties of these models help us categorize them in three different classes, namely Gaussian, Edward-Wilkinson, and Kardar-Parisi-Zhang universality classes. Five different numerical growth models are explained, and the statistical properties of the growing interfaces in 1D systems are examined via computational studies. Growth properties of 1D structures are viewed in two different ways, one being the scaling exponent of roughness changing with respect to time, and the other the distribution of height fluctuations. In this research, we show that our numerical simulation findings are in accord with the theoretical and analytical predictions. In addition, for the ballistic deposition and restricted solid-on-solid models, we introduce a binning method [1] which improves our numerical results. Moreover, we propose a novel modification on the ballistic deposition model by detecting the thin-deep wells on the interface and averaging them out which enables us to report an improvement in our numerical results with a noteworthy development in the physical properties of the system. Furthermore, we investigate the effect of the change of the deposition rate on the universal behavior of the system, as a result, we introduce critical values for the deposition rate with respect to the size of the system. With these modifications, we are one step closer to defining the complex behavior of the growth phenomena.

Author

Dr. Batoul Hashemı

How to Cite

Batoul Hashemı (Master Thesis). Ayrık biriktirme modellerinin simülasyonunda gelişmeler, 2021, Bilkent University.

Keywords

License

Tüm Hakları Saklıdır

This work is shared under the specified license terms.

More theses from Bilkent University