Thin film growth by using random shape cluster deposition

TL;DR

This paper simulates the growth of rough, porous thin films by depositing randomly shaped clusters, analyzing surface roughness, porosity, and scaling behavior over time using Monte Carlo methods.

Contribution

It introduces a novel simulation approach for thin film growth with randomly shaped clusters, highlighting effects on porosity and surface scaling.

Findings

Porous bulk with surface correlation is formed during deposition.

Surface saturation occurs after sufficient deposition time.

Porosity depends on cluster size and deposition time.

Abstract

The growth of a rough and porous thin surface by deposition of randomly shaped clusters with different sizes over an initially flat linear substrate is simulated, using Monte Carlo technique. Unlike the ordinary Random Deposition, our approach results in aggregation of clusters which produces a porous bulk with correlation along the surface and the surface saturation occurs in long enough deposition times. The scaling exponents; the growth, roughness, and dynamic exponents are calculated based on the time scale. Moreover, the porosity and its dependency to the time and clusters size are also calculated. We also study the influence of clusters size on the scaling exponent, as well as on the global porosity.