CRYSTALLIZATION OF OPALS FROM POLYDISPERSE NANOPARTICLES

被引：334

作者：

OHARA, PC

LEFF, DV

HEATH, JR

GELBART, WM

机构：

[1] Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3466

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the reversible formation of crystals of nanoparticles (opals) from solutions of polydisperse gold nanocrystals. The structures are identified by transmission electron microscopy, and are characterized by hexagonal domains of large particles at the center, surrounded radially by successively smaller particles. Simulated annealing Monte Carlo calculations are used to demonstrate that these configurations correspond to minimization of the mesoscopic van der Waals energy of polydisperse particles, and the driving force for ordering is the size dependence of dispersional attractions.

引用

页码：3466 / 3469

页数：4

共 21 条

[11] MELTING TRANSITION AND COMMUNAL ENTROPY FOR HARD SPHERES
HOOVER, WG
REE, FH
[J]. JOURNAL OF CHEMICAL PHYSICS, 1968, 49 (08) : 3609 - &
[12] HUNTER RJ, 1987, F COLLOID SCI, V1
[13] COMPUTER-SIMULATION OF SOLID LIQUID COEXISTENCE IN BINARY HARD-SPHERE MIXTURES
KRANENDONK, WGT
FRENKEL, D
[J]. MOLECULAR PHYSICS, 1991, 72 (03) : 679 - 697
[14] LEFF DV, IN PRESS J PHYS CHEM
[15] FREEZING OF POLYDISPERSE HARD-SPHERES
MCRAE, R
HAYMET, ADJ
[J]. JOURNAL OF CHEMICAL PHYSICS, 1988, 88 (02) : 1114 - 1125
[16] THE EFFECT OF POLYDISPERSITY ON THE CRYSTALLIZATION OF HARD SPHERICAL COLLOIDS
PUSEY, PN
[J]. JOURNAL DE PHYSIQUE, 1987, 48 (05): : 709 - 712
[17] PHASE-BEHAVIOR AND STRUCTURE OF COLLOIDAL SUSPENSIONS
PUSEY, PN
POON, WCK
ILETT, SM
BARTLETT, P
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 : A29 - A36
[18] FREEZING OF MIXTURES - THE DENSITY FUNCTIONAL THEORY
RICK, SW
HAYMET, ADJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (13) : 5212 - 5220
[19] GLASS-TRANSITION IN COLLOIDAL HARD-SPHERES - MODE-COUPLING THEORY ANALYSIS
VANMEGEN, W
UNDERWOOD, SM
[J]. PHYSICAL REVIEW LETTERS, 1993, 70 (18) : 2766 - 2769
[20] POLYMERS AT INTERFACES AND INTERACTIONS IN COLLOIDAL DISPERSIONS
VRIJ, A
[J]. PURE AND APPLIED CHEMISTRY, 1976, 48 (04) : 471 - 483

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