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Link of microscopic and macroscopic fields in nematodynamics

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Tribelsky,  M. I.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Anugraha, R., Nugroho, F., Ueki, T., Hidaka, Y., Kai, S., & Tribelsky, M. I. (2011). Link of microscopic and macroscopic fields in nematodynamics. Physical Review E, 83(2): 022701.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-8DB5-6
Abstract
We have found an unusual and unexpected link between micro- (nematic director) and macro- (velocity) fields in nematodynamics, which exhibits itself in extended defects of a new type. In particular, we have shown that black lines (BLs) observed in electroconvection of a homeotropically aligned nematic layer are simultaneously Bloch's domain walls for the director field and lines of zero velocity intersecting a roll pattern for the convection. A detailed experimental study revealing the fine structure of BLs and their point defects is presented.