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arXiv 1304.0987cond-mat.soft
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计算二元混合物的phase diagram:一个斑块粒子的例子研究

Computing the phase diagram of binary mixtures: a patchy particle case study

Lorenzo Rovigatti, Daniel de las Heras, José Maria Tavares, Margarida M. Telo da Gama, Francesco Sciortino

摘要:

利用蒙特卡罗模拟和Wertheim理论研究了二维双功能和三功能片状粒子混合物以及三维双功能和四功能片状粒子混合物的相行为.我们首先计算纯系统的临界点,然后我们研究如何降低温度时的临界参数的变化。我们扩展连续伞采样方法的混合物,使其能够提取信息的相行为的系统在一个固定的温度为整个范围内的密度和成分的利益。

英文摘要:

We investigate the phase behaviour of 2D mixtures of bi-functional and three-functional patchy particles and 3D mixtures of bi-functional and tetra-functional patchy particles by means of Monte Carlo simulations and Wertheim theory. We start by computing the critical points of the pure systems and then we investigate how the critical parameters change upon lowering the temperature. We extend the Successive Umbrella Sampling method to mixtures to make it possible to extract information about the phase behaviour of the system at a fixed temperature for the whole range of densities and compositions of interest.

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