27–29 Sept 2021
Online
Europe/Warsaw timezone
Abstract submission and Registration are closed.

Random Sequential Adsorption of Oriented Rectangles with Random Aspect Ratio

27 Sept 2021, 17:30
20m
Online

Online

Contributed talk S3

Speaker

Luca Petrone

Description

Random Sequential Adsorption is a very simple protocol that generates random loose packings. It takes a virtual particle, randomly chooses its position and orientation, and then checks if it does not overlap with any object already placed in the packing. If so, the virtual particle is added, otherwise it is removed.
Typically, the shape that is to be deposited is always the same. In this study, instead, we have studied a RSA of oriented rectangles of fixed area but random side length ratio.
The calculated packing density at saturation (0.678689) is considerably higher than any other else RSA.
Also, this value is dependent on the random distribution that is used to select the aspect ratio. A power-law \begin{equation} p_f(x) = (\alpha + 1) x^\alpha \end{equation} was considered. The density at saturation is increasing with $\alpha$ and the limit $\alpha \to \infty$ was estimated.

Primary author

Co-author

Michal Ciesla (M. Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland)

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