Crystallization and reentrant melting of charged colloids in nonpolar solvents

Toshimitsu Kanai; Niels Boon; Peter J. Lu; Eli Sloutskin; Andrew B. Schofield; Frank Smallenburg; René Van Roij; Marjolein Dijkstra; David A. Weitz

doi:10.1103/PhysRevE.91.030301

Crystallization and reentrant melting of charged colloids in nonpolar solvents

Toshimitsu Kanai
, Niels Boon
, Peter J. Lu
, Eli Sloutskin
, Andrew B. Schofield
, Frank Smallenburg
, René Van Roij
, Marjolein Dijkstra
, David A. Weitz

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

We 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.

Original language	English
Article number	030301
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	91
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevE.91.030301
State	Published - 23 Mar 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.

Funding

Funders	Funder number
National Aeronautics and Space Administration	NNX13AQ48G
National Science Foundation	DMR-1206765, DMR-1310266
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
National Science Foundation
Directorate for Mathematical and Physical Sciences	1310266, 1420570, 1206765

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10.1103/PhysRevE.91.030301

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title = "Crystallization and reentrant melting of charged colloids in nonpolar solvents",

abstract = "We 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.",

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doi = "10.1103/PhysRevE.91.030301",

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AU - Kanai, Toshimitsu

AU - Boon, Niels

AU - Lu, Peter J.

AU - Sloutskin, Eli

AU - Schofield, Andrew B.

AU - Smallenburg, Frank

AU - Van Roij, René

AU - Dijkstra, Marjolein

AU - Weitz, David A.

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AB - We 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.

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Crystallization and reentrant melting of charged colloids in nonpolar solvents

Abstract

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