Universal Defect Dynamics in Two-Dimensional Convective Roll Patterns

Shoichi Kai, Yoshiki Hidaka, Ken Ichi Hayashi, Michael I. Tribelsky

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The process of annihilation of two point defects with opposite topological charges in a roll pattern is discussed for electrohydrodynamic convection in a nematic layer. It is shown that at the final stage of the process the distance between the centers of defects which are being annihilated varies as the square root of the time, down-counted from the annihilation moment. Such a scaling is associated with topological properties of the slowly varying complex amplitude of the order parameter and is suggested as a generic law for annihilation or spontaneous, barrierless nucleation of pairs of defects in extended systems. Experimental evidence of the scaling in the case of electrohydrodynamic convection in MBBA is obtained.

Original languageEnglish
Pages (from-to)3419-3422
Number of pages4
Journaljournal of the physical society of japan
Issue number11
Publication statusPublished - 1996

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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