Crystallization and reentrant melting of charged colloids in nonpolar solvents

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

^*Corresponding author for this work

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

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
Number of pages	5
Journal	Physical Review. E, Statistical, nonlinear, and soft matter physics
Volume	91
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevE.91.030301
Publication status	Published - 23 Mar 2015

Funding

T.K., N.B., and P.J.L. contributed equally to this work. This work was supported by NASA (NNX13AQ48G), the NSF (DMR-1310266 and DMR-1206765), the Harvard Materials Research Science and Engineering Center (DMR-1420570), and JSPS Postdoctoral Fellowships for Research Abroad, and is part of the D-ITP consortium, a program of the Netherlands Organisation for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science (OCW).

Keywords

KIRKWOOD-ALDER TRANSITION
PHASE-DIAGRAM
MONODISPERSE LATEXES
YUKAWA SYSTEMS
MODEL SYSTEM
HARD-SPHERE
CRYSTALS
SUSPENSIONS
PARTICLES
DYNAMICS

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10.1103/PhysRevE.91.030301

PhysRevE.91Final published version, 0.98 MBLicence: Taverne

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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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author = "Toshimitsu Kanai and Niels Boon and Lu, {Peter J.} and Eli Sloutskin and Schofield, {Andrew B.} and Frank Smallenburg and {van Roij}, Rene and Marjolein Dijkstra and Weitz, {David A.}",

year = "2015",

month = mar,

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doi = "10.1103/PhysRevE.91.030301",

language = "English",

volume = "91",

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T1 - Crystallization and reentrant melting of charged colloids in nonpolar solvents

AU - Kanai, Toshimitsu

AU - Boon, Niels

AU - Lu, Peter J.

AU - Sloutskin, Eli

AU - Schofield, Andrew B.

AU - Smallenburg, Frank

AU - van Roij, Rene

AU - Dijkstra, Marjolein

AU - Weitz, David A.

PY - 2015/3/23

Y1 - 2015/3/23

N2 - 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.

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.

KW - KIRKWOOD-ALDER TRANSITION

KW - PHASE-DIAGRAM

KW - MONODISPERSE LATEXES

KW - YUKAWA SYSTEMS

KW - MODEL SYSTEM

KW - HARD-SPHERE

KW - CRYSTALS

KW - SUSPENSIONS

KW - PARTICLES

KW - DYNAMICS

U2 - 10.1103/PhysRevE.91.030301

DO - 10.1103/PhysRevE.91.030301

M3 - Article

SN - 1539-3755

VL - 91

JO - Physical Review. E, Statistical, nonlinear, and soft matter physics

JF - Physical Review. E, Statistical, nonlinear, and soft matter physics

IS - 3

M1 - 030301

ER -

Crystallization and reentrant melting of charged colloids in nonpolar solvents

Abstract

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Keywords

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