We report a method of one-step direct patterning of metallic nanostructures. In the method, termed laser assisted direct imprinting (LADI), the surface of a metal film on a substrate is melted by a single excimer laser pulse and subsequently imprinted within approximately 100 ns using a transparent quartz mold, while the substrate is kept at a low temperature and in a solid phase. Using LADI, w...

Using molecular-dynamics simulation, we determine the magnitude and anisotropy of the kinetic coefficient (mu) for the crystal growth from the melt for the hard-sphere system through an analysis of equilibrium capillary fluctuations in interfacial height. We find mu100 = 1.44(7), mu110 = 1.10(5), and mu111 = 0.64(3) in units of square root (kB/(mTm)), where kB is Boltzmann's constant, m is the ...

Atomic shadowing during kinetically limited physical vapor deposition causes a chaotic instability in the layer morphology that leads to nanorod growth. Glancing angle deposition GLAD experiments indicate that the rod morphology, in turn, exhibits a chaotic instability with increasing surface diffusion. The measured rod width versus growth temperature converges onto a single curve for all metal...

sources which were used for minting coins may help us recognize the mines that parthians used for mint houses that were marked on their coins. these signs may solve many politico-economic issues or may even lead to the recognition of their mines. the coins under study were related to ecbatana mint house and were extracted from silver mines through cupellation. the chemical composition of these ...

The kinetics and microscopic mechanisms of laser melting and disintegration of thin Ni and Au films irradiated by a short, from 200 fs to 150 ps, laser pulse are investigated in a coupled atomistic-continuum computational model. The model provides a detailed atomic-level description of fast nonequilibrium processes of laser melting and film disintegration and, at the same time, ensures an adequ...

In this paper, local spark sintering of a ceramic-metal system (SiO₂-Sn) during microwave processing was examinedby means of synchrotron-radiation-computed tomography technology. From the reconstructed 3-D and cross-section images of the specimen, adensification process was observed below the melting point of Sn, and then the specimen came into a rapid densification stage. These results may be ...

The accurate determination of melting curves for transition metals is an intense topic within high pressure research, both because the technical challenges included as well controversial data obtained from various experiments. This review presents main static techniques that are used studies, with a strong focus on diamond anvil cell; it also explores state art detection methods and analyzes ma...

Engineering the surface orientation of face-centered cubic (fcc) metals to close-packed {111} plane can significantly enhance their oxidation resistance. However, owing synergetic effect energy density (γ˙) and strain (ω), such currently only be achieved by atomic-level thin film epitaxy or monocrystallization polycrystalline metals. In this study, we characterized microstructures pure copper (...