The significance of multipole interactions for the stability of regular structures composed from charged particles.

Lindgren, Eric B; Avis, Holly; Miller, Abigail; Stamm, Benjamin; Besley, Elena; Stace, Anthony J

Abstract

Identifying the forces responsible for stabilising binary particle lattices is key to the controlled fabrication of many new materials. Experiments have shown that the presence of charge can be integral to the formation of ordered arrays; however, a complete analysis of the forces responsible has not included many of the significant lattice types that may form during fabrication. A theory of many-body electrostatic interactions has been applied to six lattice stoichiometries, AB, AB2, AB3, AB4, AB5 and AB6, to show that induced multipole interactions can make a very significant (>80 %) contribution to the total lattice energy of arrays of charged particles. Particle radii ratios which favour global minima in electrostatic energy are found to be the same or a close match to those observed by experiment. Although certain lattice types exhibit local energy minima, the calculations show that many-body rather than two-body interactions are ultimately responsible for the structures observed by experiment. For a lattice isostructural with CFe4, a particle size ratio not previously observed is found to be particularly stable due to many-body effects.

Citation

Lindgren, E. B., Avis, H., Miller, A., Stamm, B., Besley, E., & Stace, A. J. (2024). The significance of multipole interactions for the stability of regular structures composed from charged particles. Journal of Colloid and Interface Science, 663, Article 458-466. https://doi.org/10.1016/j.jcis.2024.02.146

• Journal Article Type: Article
• Acceptance Date: Feb 19, 2024
• Online Publication Date: Feb 22, 2024
• Publication Date: 2024-06
• Deposit Date: Mar 4, 2024
• Publicly Available Date: Mar 6, 2024
• Journal: Journal of Colloid and Interface Science
• Print ISSN: 0021-9797
• Electronic ISSN: 1095-7103
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 663
• Article Number: 458-466
• DOI: https://doi.org/10.1016/j.jcis.2024.02.146
• Keywords: Charged particles, Many-body effects, Dielectric constant, Binary particle lattices
• Public URL: https://nottingham-repository.worktribe.com/output/31617677
• Additional Information: This article is maintained by: Elsevier; Article Title: The significance of multipole interactions for the stability of regular structures composed from charged particles; Journal Title: Journal of Colloid and Interface Science; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.jcis.2024.02.146; Content Type: article; Copyright: © 2024 The Authors. Published by Elsevier Inc.