1992/08/01 by Enrique Canessa, E. Canessa, A. Calmetta +1
Earth and Planetary Sciences · Physics and Astronomy · #Surface and Thin Film Phenomena #Theoretical and Computational Physics #cond-mat #nanoparticles nucleation surface interactions
paper · pdf · doi:10.1016/0375-9601(92)90330-o
CM-ICTP/92/123
openalex publication_date 1992/08/01 · arxiv created 1992/09/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
In an attempt to find generic features on the fractal growth of Au films deposited on Ru(001), a simple simulation model based on irreversible diffusion-limited aggregation (DLA) is discussed. Highly irregular two-dimensional dentritic islands of Au particles that gradually grow on a larger host lattice of Ru particles and have fractal dimension df~ 1.70 each, are generated via a multiple had-hoc version of the DLA algorithm for single aggregates. Annealing effects on the islands morphology are reproduced assuming different sticking probabilities at nearest-neighbour lattice sites of Au films on Ru(001). Using simulation data, islands growth are described in analogy to diffusion-limited, precipitate growth with soft impingement of precipities. This leads to analyse thin film island growth kinetics in such fractal systems and to predict a main peak in scattering intensity patterns due to interisland interference. ---------------- Copies upon request to: [email protected]