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Two-dimensional colloidal alloys

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


Adam D. Law


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.

Journal Article Type Article
Publication Date Mar 25, 2011
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
Institution Citation Law, A. D., Buzza, D. M. A., & Horozov, T. S. (2011). Two-dimensional colloidal alloys. Physical review letters, 106(12), doi:10.1103/physrevlett.106.128302
Keywords General Physics and Astronomy
Publisher URL
Additional Information Copy of article first published in Physical review letters, 2011, v.106, issue 12 © 2011 American Physical Society