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Related Experiment Videos

Non-close-packed three-dimensional quasicrystals.

Pablo F Damasceno1, Sharon C Glotzer, Michael Engel

  • 1Applied Physics Program, University of Michigan, Ann Arbor, MI 48109, United States of America. Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA 94158, United States of America.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|April 13, 2017
PubMed
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Computational self-assembly revealed four types of quasicrystals, including novel decagonal, dodecagonal, and octagonal structures, within a single particle system. These findings advance understanding of quasicrystal formation in condensed matter physics.

Area of Science:

  • Condensed matter physics
  • Materials science
  • Computational materials science

Background:

  • Quasicrystals are ordered structures lacking translational symmetry.
  • They are significant in condensed matter, appearing from atomic to nanoscale.
  • Understanding their formation is key to designing new materials.

Purpose of the Study:

  • To computationally investigate the self-assembly of multiple quasicrystal structures.
  • To explore quasicrystal formation in a single model system with tunable interactions.
  • To identify novel quasicrystal phases and their formation conditions.

Main Methods:

  • Utilizing computational modeling of particle interactions.
  • Employing a tunable isotropic pair potential for identical particles.

Related Experiment Videos

  • Simulating self-assembly processes to observe emergent structures.

    • Main Results:

    • Successfully reproduced a known icosahedral quasicrystal.
    • Reported the computational discovery of decagonal, dodecagonal, and octagonal quasicrystals.
    • Observed that these quasicrystals form with low coordination numbers or in mesoscale density variations.
    • Identified a coexisting network gel phase.

    Conclusions:

    • A single model system can yield diverse quasicrystal structures.
    • Tunable interparticle potentials are crucial for controlling self-assembly.
    • The findings provide insights into the fundamental principles governing quasicrystal formation.