Dimeric and dipolar ground state orders in colloidal molecular crystals

Anais da Academia Brasileira de Ciências

Emmanuel Trizac²  Samir El Shawish¹  Jure Dobnikar¹ 

[1] ,Université Paris-Sud Laboratoire de Physique Théorique et Modèles Statistiques Orsay,France

关键词: colloidal molecular crystals;    confined colloidal suspensions;    orientational ordering;    screened Coulomb interactions;    simulated annealing;    cristais moleculares coloidais;    suspensões coloidais confinadas;    ordenamento de orientação;    interações de Coulomb;    recozimento simulado;   

DOI  :  10.1590/S0001-37652010000100008

来源: SciELO

【 摘 要 】

A two dimensional colloidal suspension subject to a periodic substrate evolves into a colloidal molecular crystal under situationsofstrongconfinement. Wefocusonthelongrangeorientationalordertherebyemerging, inthegroundstate. We study by simulations the situations where in each trap lies a pair of identical colloids, or alternatively a pair of oppositelychargedmacroions. We consider square or triangular geometries for the periodic confinement, together with less symmetric distorted lattices.

【 授权许可】

CC BY   
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