13 papers
Auxetic behaviour in crystals of hard polyhedra
Rinske M. Alkemade, Silvana A. Caipa Cure, AlptuÄ Ulugöl +8
Auxetic materials - systems that, when subjected to a compression in one direction, also compress in one or more perpendicular directions - have intrigued researchers for decades d…
Determining fluid-crystal phase boundaries for a binary hard-sphere mixture using direct-coexistence simulations
Rinske M. Alkemade, Alessandro Salo, Laura Filion +1
Determining fluid-crystal phase boundaries via direct-coexistence methods can be challenging due to the fact that the simulation box can introduce crystal strain. Recently, a direc…
Vacancy defects in square-triangle tilings and their implications for quasicrystals formed by square-shoulder particles
AlptuÄ Ulugöl, Giovanni Del Monte, Eline K. Kempkes +2
Almost all observed square-triangle quasicrystals in soft-matter systems contain a large number of point-like defects, yet the role these defects play in stabilizing the quasicryst…
Characterizing the cage state of glassy systems and its sensitivity to frozen boundaries
Rinske M. Alkemade, Frank Smallenburg, Laura Filion
Understanding the role that structure plays in the dynamical arrest observed in glassy systems remains an open challenge. Over the last decade, machine learning (ML) strategies hav…
Machine learning short-ranged many-body interactions in colloidal systems using descriptors based on Voronoi cells
Rinske M. Alkemade, Rastko Sknepnek, Frank Smallenburg +1
Machine learning (ML) strategies are opening the door to faster computer simulations, allowing us to simulate more realistic colloidal systems. Since the interactions in colloidal…
Local composition fluctuations act as precursors for crystal nucleation in polydisperse hard spheres
Marjolein de Jager, Antoine Castagnède, Frank Smallenburg +1
We revisit the effect of polydispersity on the crystal nucleation of hard spheres. Using event-driven molecular dynamics simulations, we obtain the nucleation rate as a function of…