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Science 2 November 2001:
Vol. 294. no. 5544, pp. 1074 - 1079
DOI: 10.1126/science.1057480
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Research Articles
Universality and Scaling in the Disordering of a Smectic Liquid Crystal
Tommaso Bellini,12
Leo Radzihovsky,1
John Toner,3
Noel A. Clark1
We present experimental and theoretical studies of the effects of
quenched disorder on one-dimensional crystal ordering in three
dimensions. This fragile smectic liquid crystal layering, the material
with the simplest positional order, is also the most easily deformed
periodic structure and is, therefore, profoundly affected by disorder,
introduced here by confinement in silica aerogel. Theory and experiment
combine to characterize this system to an extraordinary degree,
their close accord producing a coherent picture: crystal ordering is
lost, giving way to extended short-range correlations that exhibit
universal structure and scaling, anomalous layer elasticity, and glassy
dynamics.
1 Department of Physics, University of
Colorado, Boulder, CO 80309, USA.
2 INFM,
Dipartimento di Chimica e Biochimica Medica, Universitá di
Milano, Milano, Italy.
3 Department of Physics,
Materials Science Institute, and Institute of Theoretical Science,
University of Oregon, Eugene, OR 97403, USA.
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