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Related Experiment Video

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Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

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Published on: May 20, 2014

Crystallization of colloidal hard spheres under gravity.

Matthieu Marechal¹, Marjolein Dijkstra

¹Soft Condensed Matter, Debye Institute for NanoMaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|August 7, 2007

Summary

Gravity influences colloidal hard sphere crystallization. Higher gravity reduces simultaneous freezing layers, while increasing chemical potential continuously thickens the crystal film.

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Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Area of Science:

Colloid science
Statistical mechanics
Materials science

Background:

Colloidal systems exhibit phase transitions relevant to materials science.
Understanding crystallization under external fields is crucial for predicting material properties.

Purpose of the Study:

Investigate colloidal hard sphere crystallization under gravity.
Analyze the freezing transition's dependence on gravity and chemical potential.

Main Methods:

Grand canonical Monte Carlo simulations were employed.
Simulations focused on colloidal hard spheres subjected to gravitational fields.

Main Results:

A discontinuous freezing transition was observed.
Multiple fluid layers froze simultaneously at a specific chemical potential.
Increased gravitational strength reduced the number of simultaneously freezing layers.
Higher chemical potentials led to a continuous increase in crystalline film thickness.

Conclusions:

Gravity significantly alters the crystallization behavior of hard spheres.
The interplay between gravity and chemical potential dictates the freezing mechanism and crystal growth.