Owing to the kinetic nature of the glass transition, the ability to significantly alter the properties of amorphous solids by the typical routes to the vitreous state is restricted. For instance, an order of magnitude change in the cooling rate merely modifies the value of the glass transition temperature (T(g)) by a few degrees. Here we show that matrix-assisted pulsed laser evaporation (MAPLE...

By sequential hydrothermal growth of ZnO nanowire arrays and thermal evaporation of Be, large-scale vertically aligned ZnO/BeO core/shell nanocable arrays on glass substrate have been successfully synthesized without further heat treatment. Detailed characterizations on the sample morphologies, compositions, and microstructures were systematically carried out, which results disclose the growth ...

We present the first realization of three-dimensional lithography on the nanometer scale using atom optical techniques. It has already been shown that, with atom lithography, two-dimensional lateral structures of 50 nm can be obtained. In our experiment we utilize the resonant enhancement of light forces to address specifically one species of a multi-component beam. Thus a host and a dopant mat...

The mechanism of the generation dark matter and radiation from evaporation primordial black holes is very interesting. We consider case Kerr to generalize previous results obtained in Schwarzschild case. For matter, do not change dramatically bounds on warm apply similarly: particular, cannot save scenario hole domination for light matter. radiation, expectations $\Delta N_{eff}$ significantly ...

Semi-batch evaporative crystallization of CoSO4 was investigated at various underpressures and with different heating powers. The for boiling aqueous solutions temperatures concentrations were measured compared to predicted values obtained by the Aspen Plus Version 11 process simulation software. presence solute decreased underpressure solution in comparison pure water. In experiments, crystall...

The highest Raman enhancement factors are obtained in a double resonance: molecular electronic resonance and plasmon resonance with a "hot spot" in surface-enhanced Raman scattering (SERS). However, for most molecules of interest the double resonance is not realized with the excitation frequencies normally used in Raman. The latter may limit the practical applications of SERS for trace analysis...

Abstract The need for freshwater supply in different parts of the world has given great interest to study seawater desalination, which led development various innovative techniques this field. present numerical contributes improvement evaporative desalination operation by introducing nanoparticles into base fluid. technique considered consists a saltwater film falling along inner wall vertical ...