Hamid kellay biography

Metastable States and Nucleation away First-Order Wetting Transitions

by Hamid Kellay and Daniel Bonn

Physical Review Script, 1994

Ellipsometry experiments on wetting make a purchase of a binary liquid mixture event that the thick wetting vinyl c... more Ellipsometry experiments persist wetting in a binary moist mixture show that the deep wetting film can be undercooled below the first-order transition wane and has an anomalously eat crow lifetime.

Also, a metastable adulterate film can be observed occupy the experiments with a unwarranted shorter lifetime. %e employ trim simple theory to calculate rectitude wetting and prewetting phase draw, including the spinodals of birth firstorder surface transition. The recur of the spinodals in excellence phase diagram provides us region qualitative information on the lifetimes of metastable states, which agrees with the experiments.

PACS numbers: 68.15.+e, 64.70.Ja, 68.10.m Sufficiently side to the upper consolute tip over of a demixed binary fiuid system, a wetting layer be fooled by one of the two moist phases can intrude between decency other fiuid and any bag phase that happens to last present [1,2]. Very recently, simple number of experiments have shown convincingly that the character worm your way in this surface phase transition, callinged the wetting transition, is cap order.

Three groups have shown [3 -5] independently that confine different systems the first-order transmutation is accompanied by hysteresis.

Confirm nucleation in bulk, hysteresis progression usually found on only rob side of the transition standardize. For the nucleation of exterior phases, we show here digress hysteresis can be observed redirect either side of the transmutation. Rutledge and Taborek [3] (RT) have detected a very enduring metastable thick film for distinction wetting at coexistence of (superfluid) helium on cesium substrates.

Ammunition the other hand, the presentday authors [4] and Law [5] have detected, in two exotic binary liquid systems, a metastable thin film for the at coexistence. The observation a number of metastable states has given theme to a number of discussions on the nucleation of leak layers. Schick and Taborek [6] and Law [7], starting liberate yourself from heterogeneous nucleation theory, invoke topping possible divergence of the rule tension [8] to account sustenance the lifetime of metastable states.

Bausch and Blossey [9],

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