Synchrotron Studies of the First-Order Melting Transitions of Hexatic Monolayers and Multilayers in Freely Suspended Liquid-Crystal Films

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Synchrotron Studies of the First-Order Melting Transitions of Hexatic Monolayers and Multilayers in Freely Suspended Liquid-Crystal Films

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Title: Synchrotron Studies of the First-Order Melting Transitions of Hexatic Monolayers and Multilayers in Freely Suspended Liquid-Crystal Films
Author: Amador, S.; Pershan, Peter S.; Stragier, H.; Swanson, B. D.; Tweet, D. J.; Sorensen, L. B.; Sirota, E. B.; Ice, G. E.; Habenschuss, A.

Note: Order does not necessarily reflect citation order of authors.

Citation: Amador, S., Peter S. Pershan, H. Stragier, B. D. Swanson, D. J. Tweet, L. B. Sorensen, E. B. Sirota, G. E. Ice, and A. Habenschuss. 1989. Synchrotron studies of the first-order melting transitions of hexatic monolayers and multilayers in freely suspended liquid-crystal films. Physical Review A 39(5): 2703-2708.
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Abstract: Synchrotron x-ray diffraction has been used to study the surface and the interior hexatic-to-liquid (smectic-I to smectic-C) melting transitions of freely suspended liquid-crystal films of N-[4'-(n-heptyl)benzylidene]-4-(n-heptyl)aniline (7O.7) five molecular layers thick. Both the surface hexatic monolayers and the interior hexatic layers melt via hysteretic first-order transitions. After the two surface layers undergo a first-order transition to the smectic-I phase, the surface hexatic correlation length \(\xi\) evolves smoothly from \(\sim 100 to \sim 300 \mathring{A}\) with a roughly square-root form, \(\xi \sim \mid T-T_c \mid ^{1/2}\).
Published Version: doi:10.1103/PhysRevA.39.2703
Other Sources: http://www.laucksfoundation.org/public_html/lauckswebpage/BDSwebpage/papers/amadorpra1989.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:10357467
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