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Title: Retarded and nonretarded van der Waals interactions between a cluster and a second cluster or a conducting surface

Abstract

In some respects, a cluster consisting of many atoms may be regarded as a single large atom. Knowing the dielectric properties of such a cluster permits one to evaluate the form of the van der Waals (dispersion) interactions between two clusters or between one cluster and a surface. In this paper, we derive these interactions in two extreme opposite regimes of separation: fully retarded and nonretarded. In the fully retarded regime (very large separation), the magnitude of the interaction is determined by just the static polarizability of the cluster(s). In the nonretarded regime (small separation), we employ a single resonant frequency model of the cluster polarizability to derive expressions for the interactions' coefficients. Numerical examples are presented to demonstrate that many-body screening of these interactions can be significant. The results represent the corrections to the commonly used approximation of pairwise additivity of interatomic interactions.

Authors:
; ;  [1];  [2]
  1. Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
  2. Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
Publication Date:
OSTI Identifier:
20633854
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 67; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.67.033201; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMIC CLUSTERS; ATOMS; BASIC INTERACTIONS; CORRECTIONS; DIELECTRIC PROPERTIES; MANY-BODY PROBLEM; POLARIZABILITY; SURFACES; VAN DER WAALS FORCES

Citation Formats

Calbi, M M, Gatica, S M, Cole, M W, and Velegol, D. Retarded and nonretarded van der Waals interactions between a cluster and a second cluster or a conducting surface. United States: N. p., 2003. Web. doi:10.1103/PhysRevA.67.033201.
Calbi, M M, Gatica, S M, Cole, M W, & Velegol, D. Retarded and nonretarded van der Waals interactions between a cluster and a second cluster or a conducting surface. United States. https://doi.org/10.1103/PhysRevA.67.033201
Calbi, M M, Gatica, S M, Cole, M W, and Velegol, D. 2003. "Retarded and nonretarded van der Waals interactions between a cluster and a second cluster or a conducting surface". United States. https://doi.org/10.1103/PhysRevA.67.033201.
@article{osti_20633854,
title = {Retarded and nonretarded van der Waals interactions between a cluster and a second cluster or a conducting surface},
author = {Calbi, M M and Gatica, S M and Cole, M W and Velegol, D},
abstractNote = {In some respects, a cluster consisting of many atoms may be regarded as a single large atom. Knowing the dielectric properties of such a cluster permits one to evaluate the form of the van der Waals (dispersion) interactions between two clusters or between one cluster and a surface. In this paper, we derive these interactions in two extreme opposite regimes of separation: fully retarded and nonretarded. In the fully retarded regime (very large separation), the magnitude of the interaction is determined by just the static polarizability of the cluster(s). In the nonretarded regime (small separation), we employ a single resonant frequency model of the cluster polarizability to derive expressions for the interactions' coefficients. Numerical examples are presented to demonstrate that many-body screening of these interactions can be significant. The results represent the corrections to the commonly used approximation of pairwise additivity of interatomic interactions.},
doi = {10.1103/PhysRevA.67.033201},
url = {https://www.osti.gov/biblio/20633854}, journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 67,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 2003},
month = {Sat Mar 01 00:00:00 EST 2003}
}