Multiple-step melting in two-dimensional hexatic liquid-crystal films

Science

Volumn 280, Issue 5368, 1998, Pages 1424-1426

  Chou, Chia Fu ^a   Jin, Anjun J ^b   Hui, S W ^c   Huang, C C ^d   Ho, John T ^e  

^a PRINCETON UNIVERSITY   (United States)

^b APPLIED MATERIALS INC   (United States)

^c ROSWELL PARK CANCER INSTITUTE   (United States)

^d University of Minnesota   (United States)

^e UNIVERSITY AT BUFFALO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CRYSTAL STRUCTURE; ELECTRON BEAM; ELECTRON DIFFRACTION; LIQUID CRYSTAL; OPTICAL RESOLUTION; PREDICTION; PRIORITY JOURNAL;

EID: 0032577354     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.280.5368.1424     Document Type: Article

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25. 6 < 1, the sample is in the hexatic regime exhibiting long-range bond-orientational order.
26. 2 (by 30%) than a Lorentzian fit. Our analysis on the radial line shape is consistent with those from x-ray measurement on other LC films [ S. C. Davey, J. Budai, J. W. Goodby, R. Pindak, D. E. Monoton, ibid. 53, 2129 (1984); E. B. Sirota, P. S. Pershan, S. Amador, L. B. Sorensen, Phys. Rev. A 35, 2283 (1987)].
27. 2 (by 30%) than a Lorentzian fit. Our analysis on the radial line shape is consistent with those from x-ray measurement on other LC films [ S. C. Davey, J. Budai, J. W. Goodby, R. Pindak, D. E. Monoton, ibid. 53, 2129 (1984); E. B. Sirota, P. S. Pershan, S. Amador, L. B. Sorensen, Phys. Rev. A 35, 2283 (1987)].
28. 2 (by 30%) than a Lorentzian fit. Our analysis on the radial line shape is consistent with those from x-ray measurement on other LC films [ S. C. Davey, J. Budai, J. W. Goodby, R. Pindak, D. E. Monoton, ibid. 53, 2129 (1984); E. B. Sirota, P. S. Pershan, S. Amador, L. B. Sorensen, Phys. Rev. A 35, 2283 (1987)].
29. All of the data presented here are highly reproducible provided the sample was prepumped in a vacuum oven for several hours to remove excess moisture before the free-standing films were made.
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35. We are grateful to T. C. Lubensky, D. R. Nelson, and R. Pindak for valuable discussions. The 54COOBC compound was provided by V. Surendranath. This work was funded by the National Science Foundation and the National Institutes of Health.