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Title: | Novel phase diagram of a mixed Langmuir monolayer of octylcyanobiphenyl and stearic acid |
Authors: | Bhattacharyya, Amitabha. Suresh, K.A. |
Issue Date: | 1998 |
Publisher: | EDP Sciences |
Citation: | Europhysics Letters, 1998, Vol.41, p641-646 |
Abstract: | We have studied the phase diagram of a mixed monolayer system of 4$^\prime$-n-octyl-4-cyanobiphenyl (8CB) and stearic acid (SA) at the air-water interface by surface manometry and optical microscopic techniques. We found that in the mixture, a liquid condensed phase (also known as ${\rm L}_2$) was induced which does not occur in the monolayers of the individual components. The induction occurs over a large range of molar concentrations viz. 3% to 95% of SA in 8CB. More interestingly, we observed a phase separation of the liquid expanded (LE) phase (also known as ${\rm L}_1$) into an 8CB-rich LE phase and an SA-rich LE phase for molar concentrations in the range 55% to 95% of SA in 8CB. We also observed a co-existence of three stable phases. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/2819 |
ISSN: | 0295-5075 1286-4854 (Online) |
Alternative Location: | http://dx.doi.org/ 10.1209/epl/i1998-00206-0 |
Copyright: | 1998 EDP Sciences |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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1998 EL 41 p641.pdf Restricted Access | Restricted Access | 489.71 kB | Adobe PDF | View/Open Request a copy |
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