Abstract Acoustic emissions in directed energy deposition processes such as wire arc additive manufacturing and with laser beam/metal are investigated within this work, many insights about the process can be gained from this. In both processes, experienced operators hear whether a is running stable or not. Therefore, different experiments for unstable common anomalies were carried out, acoustic...

Deposition of organic cluster beams on solid substrates leads to the creation of thin films through rapid chemical reactions, which makes the process suitable for study by molecular dynamics (MD) simulations. In this work, angular effects of molecular organic beam deposition are studied extensively through classical MD simulations. The reactive empirical bond potential parameterized by Brenner ...

Detailed simulations of the interaction of energetic C60 beams with amorphous targets are presented here. The spatial evolution of the cluster components is calculated accounting for multiple scattering and Coulomb explosion by means of Monte Carlo and molecular dynamics, respectively. The charge states of the individual cluster components ~atoms, atomic ions, fragment cluster ions! as a functi...

the effect of evaporation rate on structural, morphological and optical properties of electron beam evaporated cds thin films have been investigated. cds thin film deposited by electron beam evaporation method in 12nm/min and 60nm/min evaporation rates on glass substrates. x-ray diffraction, scanning electron microscopy, uv-vis-nir spectroscopy and atomic force microscopy were used to character...

Abstract Physical vapor deposition (PVD) refers to the removal of atoms from a solid or liquid by physical means, followed those on nearby surface form thin film coating. Various approaches and techniques are applied release including thermal evaporation, electron beam ion-driven sputtering, laser ablation, cathodic arc-based emission. Some based plasma discharge, while in other cases composing...

In this study, we applied cluster beam deposition (CBD) as a new approach for fabricating efficient plasmon-based photocatalytic materials. Au nanoclusters (AuNCs) produced in the gas phase were deposited on TiO₂ P25-coated silicon wafers with coverage ranging from 2 to 8 atomic monolayer (ML) equivalents. Scanning Electron Microscopy (SEM) images of the AuNCs modified TiO₂ P25 films show that ...

Scanning tunneling microscopy (STM) has been used to investigate the nucleation and stability of iron clusters on the Al2O3/ Ni3Al(111) surface as a function of coverage and annealing temperature. We show that atomic beam deposition of iron leads to hexagonally ordered cluster arrangements with a distance of 24 Å between the clusters evidencing the template effect of the alumina film. The shape...