Projects per year
Abstract
We present a series of molecular dynamics simulations on the surface deposition process of initially free silver clusters (Agn) with different sizes (n = 100–2000) and morphologies. During the whole deposition process the morphology of the clusters was studied as a function of the landing conditions. These conditions include variations of the depth and range of the substrate potential as well as the thermal coupling to the surface and a variation of the impact velocity of the free clusters. Depending on the applied conditions the clusters' final form ranges from spread out fragments via deformed and restructured heaps to quasi unchanged spherical clusters sitting at the surface. Under certain landing conditions larger clusters retain their initial multiply twinned morphology upon deposition, while smaller ones undergo structural transitions to form single domain particles. Furthermore, the occurrence of a structural transition depends on the initial structure—initially decahedral clusters tend to conserve their morphology better than icosahedral ones. The same behavior can also be observed in our experiments, where silver clusters were grown in helium nanodroplets and subsequently deposited on amorphous carbon substrates
Original language | English |
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Article number | 044326 |
Journal | The Journal of Chemical Physics |
Volume | 140 |
DOIs | |
Publication status | Published - 2014 |
Fields of Expertise
- Advanced Materials Science
Treatment code (Nähere Zuordnung)
- Basic - Fundamental (Grundlagenforschung)
- Experimental
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Dive into the research topics of 'Molecular dynamics simulation of the deposition process of cold Ag-clusters under different landing conditions'. Together they form a unique fingerprint.Projects
- 1 Finished
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Cluster als Materialbausteine - Clusters as building blocks for new materials - Generation and characterization of nanosized building blocks for new materials: bottom-up formation from single atoms and molecules at low temperature
Mayrhofer-Reinhartshuber, M., Lackner, F., Koch, M. & Ernst, W.
1/11/10 → 31/10/14
Project: Research project