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http://hdl.handle.net/2289/3026| Title: | Temperature dependence of the smectic A layer spacing in two re-entrant nematogens |
| Authors: | Chandrasekhar, S. Suresh, K.A. Rao, K.V. |
| Issue Date: | 1980 |
| Publisher: | Heyden |
| Citation: | Proceedings of the international liquid crystals conference, Bangalore, 1979. Ed. S Chandrasekhar. Heyden, 1980, p131-133 |
| Abstract: | Precise X-ray determinations have been made of the temperature variation of the layer spacing in the smectic A phase of two pure re-entrant nematogens, 4-cyanophenyl-3-methyl-4(4-n-dodecylbenzoyloxybenzoate (12CPMBB) and 4-cyano- phenyl-3-methyl-4(4-n-undecylbenzoyloxy)benzoate (11CPMBB). The observed behaviour is similar in both cases: on cooling from the normal nematic-smectic A transition point, the spacing decreases at first over a part of the smectic range, and then increases with decrease of temperature. The results provide clear evidence of a structural rearrangement taking place in the smectic bilayer as a precursor to the formation of the re-entrant nematic phase. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/3026 |
| Copyright: | 1980 Heyden |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1980 Proc Int Liquid Crystals Conf p131.pdf Restricted Access | Restricted Access. | 124.85 kB | Adobe PDF | View/Open Request a copy |
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