Hiding in Plain View: Colloidal Self-Assembly from Polydisperse Populations

被引：51

作者：

Cabane, Bernard ^{[1
]}

Li, Joaquim ^{[2
]}

Artzner, Franck ^{[3
]}

Botet, Robert ^{[4
]}

Labbez, Christophe ^{[5
]}

Bareigts, Guillaume ^{[5
]}

Sztucki, Michael ^{[6
]}

Goehring, Lucas ^{[2
]}

机构：

[1] ESPCI, LCMD, CNRS, UMR 8231, 10 Rue Vauquelin, F-75231 Paris 05, France

[2] Max Planck Inst Dynam & Self Org MPIDS, D-37077 Gottingen, Germany

[3] Univ Rennes 1, CNRS, UMR 6251, Inst Phys Rennes, F-35042 Rennes, France

[4] Univ Paris 11, CNRS, UMR 8502, Phys Solides, F-91405 Orsay, France

[5] Univ Bourgogne Franche Comte, CNRS, ICB, UMR 6303, F-21078 Dijon, France

[6] European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 20期

关键词：

CLOSE-PACKED STRUCTURES; SMALL-ANGLE SCATTERING; 2 DIFFERENT SIZES; HARD-SPHERE; CHARGE RENORMALIZATION; PHASE-TRANSITIONS; CRYSTALLIZATION; SUSPENSIONS; DISTRIBUTIONS; DISPERSIONS;

D O I：

10.1103/PhysRevLett.116.208001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report small-angle x-ray scattering experiments on aqueous dispersions of colloidal silica with a broad monomodal size distribution (polydispersity, 14%; size, 8 nm). Over a range of volume fractions, the silica particles segregate to build first one, then two distinct sets of colloidal crystals. These dispersions thus demonstrate fractional crystallization and multiple-phase (bcc, Laves AB(2), liquid) coexistence. Their remarkable ability to build complex crystal structures from a polydisperse population originates from the intermediate-range nature of interparticle forces, and it suggests routes for designing self-assembling colloidal crystals from the bottom up.

引用

页数：5

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