Dislocation-loop-mediated smectic melting
Dislocation-loop-mediated smectic melting
复制标题
位错环介导的近晶熔化
DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
D. Roux
中科院分区:
文献类型:
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作者:
P. Moreau;L. Navailles;J. Giermanska;O. Mondain;F. Nallet;D. Roux
We report the direct observation, using freeze-fracture transmission electron microscopy, of topological melting in a lyotropic system in the vicinity of a smectic-cholesteric (N*) phase transition. The proliferation of dislocations leads to at least one, and possibly two intermediate phases, characterised by orientational ordering of the dislocation loops and the subsequent unbinding of the screw-dislocation lines.