NDLI: Self-assembly of core-corona particles confined in a circular box

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Self-assembly of core-corona particles confined in a circular box

Content Provider	Scilit
Author	Fonseca, Erik R. Mendoza, Carlos Ignacio
Copyright Year	2019
Description	Journal: Journal of Physics: Condensed Matter Using Monte Carlo simulations, we study the assembly of colloidal particles interacting via isotropic core-corona potentials in two dimensions and confined in a circular box. We explore the structural variety at low temperatures as function of the number of particles (N) and the size of the confining box and find a rich variety of patterns that are not observed in unconfined flat space. For a small number of particles \left(N\leq6\right), we identify the zero-temperature minimal energy configurations at a given box size. When the number of particles is large (N\geq100), we distinguish different regimes that appear in route towards close packing configurations as the box size decreases. These regimes are characterized by the increase in the number of branching points and their coordination number. Interestingly, we obtain anisotropic open structures with unexpected variety of rotational symmetries that can be controlled by changing the model parameters, and some of the structures have chirality, in spite of the isotropy of the interactions and of the confining box. For arbitrary temperatures, we employ Monte Carlo integration to obtain the average energy and the configurational entropy of the system, which are then used to construct a phase diagram as function of temperature and box radius. Our findings show that confined core-corona particles can be a suitable system to engineer particles with highly complex internal structure that may serve as building blocks in hierarchical assembly.
Related Links	http://arxiv.org/pdf/1907.00745 https://iopscience.iop.org/article/10.1088/1361-648X/ab42fc/pdf
ISSN	09538984
e-ISSN	1361648X
DOI	10.1088/1361-648X/ab42fc
Journal	Journal of Physics: Condensed Matter
Issue Number	1
Volume Number	32
Language	English
Publisher	IOP Publishing
Publisher Date	2019-09-10
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Condensed Matter Atomic, Molecular and Chemical Physics Monte Carlo Temperatures As Function
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science

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