Cu2S thin films have been prepared by vacuum evaporation method from CuS powder. Cu2S was deposited onto precleaned flat glass substrates coated under a pressure of 10 torr at an evaporation rate of 3Å /sec. The resistivity of the vacuum evaporated Cu2S thin films was measured in the temperature range 303K-453K and was found between 10 to 10 ohm cm. This low resistivity is due to degenerate nat...

The evaporation of a binary liquid mixture of monatomic species into near vacuum has been investigated by molecular dynamics simulations. It has been assumed that atomic interaction forces can be derived by Lennard-Jones potentials. Results are presented about surface composition changes induced by evaporation, the shape of the distribution functions of evaporating atoms. Estimates of evaporati...

The efficiency of treatment of synthetic and semi-synthetic waste oil-in-water (O/W) emulsions by vacuum evaporation is evaluated. A previous destabilisation/centrifugation stage increases the quality of the final aqueous effluent. However, proper selection of a coagulant salt or flocculant is required. A comparison of laboratory-scale evaporation results and those obtained in an industrial eva...

copper sulphide (cu 2 s) thin films at different thicknesses and annealing temperatures were deposited onto glass substrate by vacuum evaporation method. xrd study reveals the phase transformation of cu     2 s film at higher thickness. optical and resistivity study show the phase transformation of the film from cu     2 s to cus when they are annealed at higher temperature. sem st...

Introduction. Laboratory data on the evaporation kinetics and isotope fractionation of evaporation residues of silicate liquids exposed to vacuum or lowpressure gas of solar or dust-enriched compositions provide constraints on processes that affected the evolution of primitive inclusions in meteorites. In earlier work we focused on evaporations of Type B CAI-like liquids [1,4]. Here we will ree...

The evaporation rate of D2O has been determined by Raman thermometry of a droplet train (12–15μm diameter) injected into vacuum (∼10−5 torr). The cooling rate measured as a function of time in vacuum was fit to a model that accounts for temperature gradients between the surface and the core of the droplets, yielding an evaporation coefficient (γe) of 0.57±0.06. This is nearly identical to that ...

For an effective treatment of the evaporation process of a large black hole the problem concerning the role played by the fluctuations of the (vacuum) stress tensor close to the horizon is addressed. We present arguments which establish a principal relationship between the outwards fluctuations of the stress tensor close to the horizon and quantities describing the onset of the evaporation proc...

Introduction: In-depth analysis of evaporitic sediments at Meridiani Planum by the Opportunity Rover has highlighted the importance of fluid evaporation at the martian surface [1]. Previous work aimed at understanding the controls on evaporation and the resulting mineral assemblages has been largely theoretical [2]. Some recent experimental work has focused on evaporite minerals at the martian ...