Triangular tessellation scheme for the adsorption free energy at the liquid-liquid interface: Towards nonconvex patterned colloids

被引:25
作者
de Graaf, Joost [1 ]
Dijkstra, Marjolein [1 ]
van Roij, Rene [2 ]
机构
[1] Univ Utrecht, Debye Inst Nanomat Sci, NL-3584 CC Utrecht, Netherlands
[2] Univ Utrecht, Inst Theoret Phys, NL-3584 CE Utrecht, Netherlands
来源
PHYSICAL REVIEW E | 2009年 / 80卷 / 05期
关键词
adsorption; colloids; free energy; numerical analysis; wetting; FLUID INTERFACES; ELLIPSOIDAL PARTICLES; STABILITY; FORCE;
D O I
10.1103/PhysRevE.80.051405
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We present a numerical technique, namely, triangular tessellation, to calculate the free energy associated with the adsorption of a colloidal particle at a flat interface. The theory and numerical scheme presented here are sufficiently general to handle nonconvex patchy colloids with arbitrary surface patterns characterized by a wetting angle, e.g., amphiphilicity. We ignore interfacial deformation due to capillary, electrostatic, or gravitational forces, but the method can be extended to take such effects into account. It is verified that the numerical method presented is accurate and sufficiently stable to be applied to more general situations than presented in this paper. The merits of the tessellation method prove to outweigh those of traditionally used semianalytic approaches, especially when it comes to generality and applicability.
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页数:19
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