Crystallization and reentrant melting of charged colloids in nonpolar solvents
Lu, Peter J.
Schofield, Andrew B.
van Roij, René
Weitz, David A.
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CitationKanai, Toshimitsu, Niels Boon, Peter J. Lu, Eli Sloutskin, Andrew B. Schofield, Frank Smallenburg, René van Roij, Marjolein Dijkstra, and David A. Weitz. 2015. “Crystallization and Reentrant Melting of Charged Colloids in Nonpolar Solvents.” Physical Review E91 (3): 030301. https://doi.org/10.1103/PhysRevE.91.030301.
AbstractWe explore the crystallization of charged colloidal particles in a nonpolar solvent mixture. We simultaneously charge the particles and add counterions to the solution with aerosol-OT (AOT) reverse micelles. At low AOT concentrations, the charged particles crystallize into body-centered-cubic (bcc) or face-centered-cubic (fcc) Wigner crystals; at high AOT concentrations, the increased screening drives a thus far unobserved reentrant melting transition. We observe an unexpected scaling of the data with particle size, and account for all behavior with a model that quantitatively predicts both the reentrant melting and the data collapse.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41511261
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