Ramaswamy, S. ; Toner, J. (1990) Grain boundary structure in incommensurate smectics: a signature of phasons Journal of Physics: Condensed Matter, 2 . SA275-SA277. ISSN 0953-8984
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Official URL: http://iopscience.iop.org/0953-8984/2/S/041
Related URL: http://dx.doi.org/10.1088/0953-8984/2/S/041
Abstract
The authors consider a tilt grain-boundary with small angle theta in an incommensurate smectic Aic liquid crystal with ordering wavenumbers q1, q2 and sample thickness h in the direction normal to the layers. For qi theta h≪1, a limit well within the reach of experiment, they find that the dislocation array which forms such a boundary has a spacing D approximately h⅕ theta-⅘. This prediction, which is qualitatively different from that obtained for periodic smectics by Nallet and Prost, should serve as a decisive test for the existence of phasons and hence for the truly incommensurate nature of these systems.
Item Type: | Article |
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Source: | Copyright of this article belongs to Institute of Physics. |
ID Code: | 40132 |
Deposited On: | 21 May 2011 09:55 |
Last Modified: | 21 May 2011 09:55 |
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