Two-dimensional colloidal alloys

Law, Adam D.; Buzza, D. Martin A; Horozov, Tommy S.

Abstract

We study the structure of mixed monolayers of large (3μm diameter) and small (1μm diameter) very hydrophobic silica particles at an octane-water interface as a function of the number fraction of small particles ξ. We find that a rich variety of two-dimensional hexagonal super-lattices of large (A) and small (B) particles can be obtained in this system due to strong and long-range electrostatic repulsions through the nonpolar octane phase. The structures obtained for the different compositions are in good agreement with zero temperature calculations and finite temperature computer simulations. © 2011 American Physical Society.

Citation

Law, A. D., Buzza, D. M. A., & Horozov, T. S. (2011). Two-dimensional colloidal alloys. Physical review letters, 106(12), Article ARTN 128302. https://doi.org/10.1103/physrevlett.106.128302

• Journal Article Type: Article
• Online Publication Date: Mar 24, 2011
• Publication Date: Mar 25, 2011
• Deposit Date: Nov 13, 2014
• Journal: Physical review letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 106
• Issue: 12
• Article Number: ARTN 128302
• DOI: https://doi.org/10.1103/physrevlett.106.128302
• Keywords: General Physics and Astronomy
• Public URL: https://hull-repository.worktribe.com/output/462224
• Publisher URL: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.106.128302
• Additional Information: Copy of article first published in Physical review letters, 2011, v.106, issue 12 © 2011 American Physical Society