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Related Experiment Videos

Symmetry breaking and pattern selection in far-from-equilibrium systems.

G Nicolis1, I Prigogine

  • 1Faculté des Sciences, Campus Plaine, C. P. 231, Université Libre de Bruxelles, Service de Chimie Physique II, Boulevard du Triomphe, 1050 Brussels, Belgium.

Proceedings of the National Academy of Sciences of the United States of America
|February 1, 1981
PubMed
Summary

This study introduces a mechanism for nonequilibrium systems to create asymmetric patterns. External polar or chiral fields guide symmetry-breaking bifurcations, leading to preferred polarity or chirality in the system.

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Area of Science:

  • Physics
  • Chemistry
  • Biology

Background:

  • Nonequilibrium systems often exhibit complex behaviors.
  • Symmetry-breaking bifurcations are key to pattern formation.
  • External fields can influence system dynamics.

Purpose of the Study:

  • To outline a mechanism for selecting spatially asymmetric solutions in nonequilibrium systems.
  • To explore how external polar or chiral fields interact with bifurcations.
  • To discuss the implications of induced asymmetry in chemical and biological contexts.

Main Methods:

  • Theoretical modeling of systems with symmetry-breaking bifurcations.
  • Analysis of interactions between macroscopic modes and external fields.
  • Investigation of pattern formation under perturbed bifurcations.

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Main Results:

  • A mechanism is described where external fields induce asymmetry.
  • Systems can capture external polarity or chirality.
  • Preferred patterns of polarity or chirality are established.

Conclusions:

  • The outlined mechanism enables the selection of asymmetric solutions in nonequilibrium systems.
  • This process has potential implications for chemical and biological pattern formation.
  • External fields provide a route to control system asymmetry.