Open Conference Systems, StatPhys 27 Main Conference

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Random sequential adsorption of hard polyhedra of tetrahedron symmetry
Piotr Kubala

##manager.scheduler.building##: Edificio Santa Maria Auditorio San Agustin
Date: 2019-07-08 11:45 AM – 03:30 PM
Last modified: 2019-06-15


Packings of identical objects have been of people’s interest since the ancient times. Nowadays, the most popular packings are so called random close packings, because their structure resembles granular matter and biological objects. However, their properties are highly sensitive to the details of a protocol used to create them.

This study utilises another type of packing generating protocol - random sequential adsorption. It consists in subsequent iterations, where position and orientation of a trial particle are selected randomly and then it is added to a packing only if it does not intersect with any previously placed object. The particle stays there still to the end of simulation. In this manner we analysed packings built of hard polyhedra of spheric-triangle invariant 323 family to find a shape, which maximises the packing fraction. Also, the kinetics of packing growth were studied to confirm that it is governed by a power-law, however, it appeared that the value of the exponent in this law does not agree with theoretical predictions.