Wetting Phenomenon

Notice in Table XVIII-1 a value for the self-diffusion of Ni on Ni(lll) measured using radioactive Ni. More gross processes can occur. Supported Ni crystallites (on alumina) may show spreading and wetting phenomena due to complex interactions with the substrate [146]. 

Sohiok M 1990 Introduotion to wetting phenomena Les Houches Lectures Liquid at interfaces ed J Charvolin, J F Joanny and J Zinn-Justin (Amsterdam Elsevier)... 

Flough D B and White L R 1980 The calculation of Flamaker constants from Lifshitz theory with applications to wetting phenomena Adv. Colloid Interface Sc/. 14 3-41... 

D. Beaglehole. Finite thickness variation of the spreading coefl cient in wetting phenomena. J Phys Chem 95 5900-5902, 1989. 

Wetting phenomena on irregularly rough surfaces have not been studied so far. It seems quite reasonable to use computer simulation methods for this purpose. Of course, such computer simulation would be very expensive as the finite size of the simulation cells would require appropriate averaging over different spatial distributions of surface inhomogeneities. Nevertheless, with modern fast computers and using multispin coding techniques such calculations can be efficiently carried out for lattice gas systems. 

Similar surface terms are commonly used in the description of interfacial systems. They correspond to the idea of a localized interaction with the wall. This has been used in the description of adsorption (see, e.g., [29]), wetting phenomena [30] and interfacial criticality [31],... 

When the bulk transition is of first order, the above mentioned arguments based on dimensionality do not apply and the would be roughening transition temperature T j may be larger than the bulk transition temperature T, in which case there is simply no roughening transition. The situation is further complicated by the wetting phenomena. When we approach T from below, the disordered phase becomes metastable and may wet the interface a large layer of disordered phase develops in between the two ordered domains. 

Dietrich S (1988) Wetting phenomena. In Phase Transitions and Critical Phenomena, Domb C, Lebowitz JL (eds.), vol 12, Academic London, p 1... 

M Schick. Introduction to Wetting Phenomena. In J Charvolin, JF Joanny, J Ziim-Justin, eds. Liquid at Interfaces. North-Holland Elsevier Science, 1990, pp 415—498. 

The next two chapters are concerned with wetting and capillarity. Wetting phenomena are still poorly understood contact angles, for example, are simply an empirical parameter to quantify wettability. Chapter 6 reviews the use of scanning polarization force... 

We review Monte Carlo calculations of phase transitions and ordering behavior in lattice gas models of adsorbed layers on surfaces. The technical aspects of Monte Carlo methods are briefly summarized and results for a wide variety of models are described. Included are calculations of internal energies and order parameters for these models as a function of temperature and coverage along with adsorption isotherms and dynamic quantities such as self-diffusion constants. We also show results which are applicable to the interpretation of experimental data on physical systems such as H on Pd(lOO) and H on Fe(110). Other studies which are presented address fundamental theoretical questions about the nature of phase transitions in a two-dimensional geometry such as the existence of Kosterlitz-Thouless transitions or the nature of dynamic critical exponents. Lastly, we briefly mention multilayer adsorption and wetting phenomena and touch on the kinetics of domain growth at surfaces. 

Finally we return to monolayers at surfaces again and consider wetting phenomena at inter ces separating ordered domains For example,... 

The term huasD can be less than, equal to, or greater than the enthalpy of the liquid surface hLv° at surface coverages beyond the monolayer. Too often the values of the heat of immersion husD of a solid into a variety of liquids are compared directly when the additional knowledge of the value of hufijL) at a specified surface coverage is necessary for proper interpretation of wetting phenomena (see Sec. IV and V). 

Surface tension and contact angle, wetting phenomena, effects of the curvature of the surface on capillarity and phase equilibria, and porosimetry (Chapter 6)... 

As mentioned in Section 6.1a, surface tension and contact angle determine wetting phenomena we examine this in Section 6.6. We take a closer look at the definition of contact angle and some complications associated with it in Section 6.7. 

Adsorption and Wetting Phenomena Associated with Graphon in Aqueous Surfactant Solutions... 

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