On the freezing and structure of hard spheres under spherical confinement
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- On the freezing and structure of hard spheres under spherical confinement
- Huang, Huan Cong; Yoon, Yong Jin; Kwak, Sang Kyu
- Confined hard spheres; Freezing; Molecular dynamics; Phase transition; Spherical pore
- Issue Date
- TAYLOR & FRANCIS LTD
- MOLECULAR PHYSICS, v.111, no.21, pp.3283 - 3288
- The equation of state and the structure of hard spheres confined in spherical pores have been investigated via molecular dynamics for different pore radii ranging from 5.0 to 10.0 σ, where σ is the particle diameter. The hard boundary is chosen to capture the pure geometric effect of spherical confinement. A discontinuity in the equation of state was observed, indicating the onset of a freezing-like phase transition, which was similar to that of the bulk hard-sphere fluids. The behaviour of confined particles resembles that of the bulk with increase in the pore size, while its deviation from the bulk is found to be larger at the solid-like phase. For the pore radius below 5.0, FCC-like crystal clusters are not formed in spherically confined hard spheres.
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