Activation barrier scaling for the spontaneous evaporation of confined water

Article Abstract:

Glauber dynamics Monte Carlo simulations and umbrella sampling techniques of a lattice gas model for confined water is used to validate the continuum estimates for the scaling of the activation barrier for evaporation with intersurface separation and barrier dependence on surface composition. It is found that the nucleation barrier for water evaporation increases with the confinement width with apparent scaling exponent epsilon = 1.9 (plus or minus) 0.1.

Molecular dynamics

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Comparison of experimental and theoretical Heterogeneous nucleation of ultrafine carbon particles

Article Abstract:

Experimental heterogeneous nucleation rates on combustion carbon particles are measured for selected working (condensing) fluids using a TMCNC is presented and compared with theoretical rates based on the Fletcher's (classical) heterogeneous nucleation theory. The experimental rates are found to differ from the theoretical values, with the differences being more than 10 orders of magnitude for octadecane.

Fluid dynamics, Carbon composites, Chemical properties

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Homogeneous boundary of the attainable superheat of liquids by the "Theory of Surges"

Article Abstract:

An alternative theory of homogenous nucleation based on the theorem on surges is formulated. It gives a steeper temperature dependence of the homogenous nucleation rate along isobara compared to Doring-Volmer-Frenkel-Zeldovich-Kagan theory.

Liquids, Thermal properties

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