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Kh. B. Khokonov

Bio: Kh. B. Khokonov is an academic researcher. The author has contributed to research in topics: Specific surface energy & Maximum bubble pressure method. The author has an hindex of 1, co-authored 1 publications receiving 253 citations.

Papers
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TL;DR: In this paper, the surface free energy and surface tension of solid metals reported in the literature are compared and preferred values for preferred values are suggested, the basic criteria which determine the value of obtained results are shown.
Abstract: Measurements of surface free energy and surface tension of solid metals reported in the literature are collected and compared and preferred values are suggested. The basic criteria which determine the value of obtained results are shown.

271 citations


Cited by
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TL;DR: The most recent progress in preparing manmade superhydrophobic surfaces through a variety of methodologies, particularly within the past several years, are reviewed and the fundamental theories of wetting phenomena related to superhydphobic surfaces are reviewed.

878 citations

Journal ArticleDOI
TL;DR: This Perspective provides a contemporary understanding of the shape evolution of colloidal metal nanocrystals under thermodynamically and kinetically controlled conditions and extends the mechanistic insights learnt to account for the products of conventional one-pot syntheses that involve self-nucleation only.
Abstract: This Perspective provides a contemporary understanding of the shape evolution of colloidal metal nanocrystals under thermodynamically and kinetically controlled conditions. It has been extremely challenging to investigate this subject in the setting of one-pot synthesis because both the type and number of seeds involved would be changed whenever the experimental conditions are altered, making it essentially impossible to draw conclusions when comparing the outcomes of two syntheses conducted under different conditions. Because of the uncertainty about seeds, most of the mechanistic insights reported in literature for one-pot syntheses of metal nanocrystals with different shapes are either incomplete or ambiguous, and some of them might be misleading or even wrong. Recently, with the use of well-defined seeds for such syntheses, it became possible to separate growth from nucleation and therefore investigate the explicit role(s) played by a specific thermodynamic or kinetic parameter in directing the evolution of colloidal metal nanocrystals into a specific shape. Starting from single-crystal seeds enclosed by a mix of {100}, {111}, and {110} facets, for example, one can obtain colloidal nanocrystals with diversified shapes by adjusting various thermodynamic or kinetic parameters. The mechanistic insights learnt from these studies can also be extended to account for the products of conventional one-pot syntheses that involve self-nucleation only. The knowledge can be further applied to many other types of seeds with twin defects or stacking faults, making it an exciting time to design and synthesize colloidal metal nanocrystals with the shapes sought for a variety of fundamental studies and technologically important applications.

707 citations

Journal ArticleDOI
TL;DR: In this article, the properties of steps in thermal equilibrium are described in the context of prediction of the stability and evolution of nanostructures on surfaces, and simple lattice models for interpreting the observations are reviewed.

552 citations

Journal ArticleDOI
TL;DR: In this article, the N-body potentials for copper, silver, gold, and nickel have been constructed using the approach of Finnis and Sinclair, where the total energy is regarded as consisting of a pairpotential part and a many body cohesive part.
Abstract: Using the approach of Finnis and Sinclair, N-body potentials for copper, silver, gold and nickel have been constructed. The total energy is regarded as consisting of a pair-potential part and a many body cohesive part. Both these parts are functions of the atomic separations only and are represented by cubic splines, fitted to various bulk properties. For the noble metals, the pair-potentials were fitted at short range to pressure-volume relationships calculated by Christensen and Heine so that interactions at separations smaller than that of the first-nearest neighbours can be treated in this scheme. Using these potentials, point defects, surfaces (including the surface reconstructions) and grain boundaries have been studied and satisfactory agreement with available experimental data has been found.

514 citations

Journal ArticleDOI
TL;DR: In this paper, contact angles measurement as an analytical tool in surface studies of polymers is reviewed, since this technique is mainly considered as a way to measure solid surface tension and is used as a measurement of surface tension.

205 citations