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Updated: May 21, 2026
10:56
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
Published on: May 20, 2014
Comparing light-induced colloidal quasicrystals with different rotational symmetries
Michael Schmiedeberg1, Holger Stark
1Institut für Theoretische Physik 2, Weiche Materie, Heinrich-Heine-Universität Düsseldorf, D-40204 Düsseldorf, Germany. schmiedeberg@thphy.uni-duesseldorf.de
Summary
Researchers explored quasicrystal formation using simulations. They found that quasicrystals with 5-, 8-, 10-, and 12-fold symmetry form more readily, requiring lower laser intensities.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Crystallography
Background:
- Quasicrystals are aperiodic solids exhibiting long-range orientational order.
- Unlike conventional crystals, quasicrystals can theoretically possess various non-crystallographic rotational symmetries.
- Observation of quasicrystalline order has been limited to a few specific symmetries.
Purpose of the Study:
- To investigate the formation of quasicrystalline structures with different rotational symmetries.
- To compare the ease of inducing quasicrystalline order for various symmetries in two dimensions.
- To identify factors influencing the onset of quasicrystalline order.
Main Methods:
- Utilized Monte Carlo simulations to model colloidal particle behavior.
- Employed laser interference patterns with specific quasicrystalline symmetries.
- Varied laser intensities to determine the threshold for quasicrystal formation.
Main Results:
- Quasicrystals with 5-, 8-, 10-, and 12-fold rotational symmetries were induced at lower laser intensities.
- These symmetries were more readily formed compared to other non-crystallographic rotational symmetries.
- The number of local symmetry centers in interference patterns correlated with the ease of formation.
Conclusions:
- The study demonstrates that specific non-crystallographic rotational symmetries in quasicrystals are more energetically favorable to form.
- Lower laser intensities are sufficient to induce quasicrystalline order for 5-, 8-, 10-, and 12-fold symmetries.
- The findings provide insights into controlling quasicrystal formation and understanding their structural properties.
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