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中文摘要：
基于Roth,Evans和Dietrich有关耗尽势的密度泛函理论研究了Lennard-Jones（L-J）流体中胶体粒子间的耗尽势.通过计算胶体稀溶液中两个胶体粒子在不同条件下的耗尽势,进一步分析了L-J流体的相关因素对耗尽势的影响.结果表明,L-J流体分子的体积分数、胶体粒子与溶剂分子的尺寸比率、L-J流体分子间的相互作用以及胶体粒子与流体分子之间的弱相互作用等因素均可对胶体粒子间耗尽势产生显著影响.研究结果可为实验上调控胶体粒子间的相互作用提供可能的线索.
英文摘要：
The depletion potential between two colloid particles immersed in a Lennard-Jones fluid is in-vestigated by the density functional theory for depletion potential proposed by Roth,Evans and Dietrich.An attempt is made to study the effects of several factors concerning colloid particles and solvent molecules on the depletion potential,which are the volume fraction of solvent,the size ratio of colloid particle to solvent,the interaction between solvent molecules,and the interaction between colloid particle and solvent.By means of the depletion potential presented under various conditions,it is shown that the effects of these fac-tors on the depletion potential are significant,and this can provide some useful clues on regulating the inter-action between colloid particles in the related experiments.
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