Evidence of continuous evolution of smectic A2 from smectic Ad |
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| Authors: | S Krishna Prasad R Shashidhar B R Ratna B K Sadashiva G Heppke S Pfeiffer |
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| Institution: | 1. Raman Research Institute , Bangalore, 56080, India;2. Technical Universit?t Berlin (ERII) , Strasse des 17 Juni 135, D-1000, Berlin 12, F.R.Germany |
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| Abstract: | Abstract We present here precise measurements of the layer spacing for two compounds, viz. 4-n-heptyloxyphenyl-4′-(4″-cyanobenzoyloxy)benzoate and 4-n-undecyloxyphenyl-4′-(4″-cyanobenzyloxy)benzoate. Contrary to earlier reports our data do not show any jump in the layer spacing at the expected Ad-A2 transition temperature, showing thereby that for both compounds A2 evolves continuously from the Ad phase. |
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