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The Journal of Chemical Physics : Equilibrium fluctuations of the Lennard-Jones cluster surface

By D. I. Zhukhovitskii

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Book Id: WPLBN0002169512
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 20 November 2008

Title: The Journal of Chemical Physics : Equilibrium fluctuations of the Lennard-Jones cluster surface  
Author: D. I. Zhukhovitskii
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), The Journal of Chemical Physics Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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Zhukhovitskii, D. I. (n.d.). The Journal of Chemical Physics : Equilibrium fluctuations of the Lennard-Jones cluster surface. Retrieved from http://community.worldlibrary.net/


Description
Description: Spectra of the cluster surface equilibrium fluctuations are treated by decomposition into the bulk and net capillary ones. The bulk fluctuations without capillary ones are simulated by the surface of a cluster truncated by a sphere. The bulk fluctuation spectrum is shown to be generated primarily by the discontinuity in the spatial distribution of cluster internal particles. The net capillary fluctuation slice spectrum is obtained in molecular dynamics simulation by subtraction of the bulk fluctuation spectrum from the total one. This net spectrum is in the best agreement with a theoretical estimation if we assume the intrinsic surface tension to be independent of the wave number. The wave number cutoff is brought in balance with the intrinsic surface tension and excess surface area induced by the capillary fluctuations. It is shown that the ratio of the ordinary surface tension to the intrinsic one can be considered as a universal constant independent of the temperature and cluster size.

 

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