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DC Field | Value | Language |
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dc.contributor.author | Rajeswari, M. | - |
dc.contributor.author | Ananthaiah, J. | - |
dc.contributor.author | Dabrowski, R. | - |
dc.contributor.author | Sastry, V.S.S. | - |
dc.contributor.author | Dhara, Surajit | - |
dc.contributor.author | Sadashiva, B.K. | - |
dc.date.accessioned | 2011-08-09T05:43:14Z | - |
dc.date.available | 2011-08-09T05:43:14Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Molecular Crystals and Liquid Crystals, 2011, Vol.547, p39 | en |
dc.identifier.issn | 1542-1406 | - |
dc.identifier.issn | 1563-5287 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/2289/4071 | - |
dc.description | Restricted Access. | en |
dc.description.abstract | We measured rheological properties of cholesteryl nonanoate and its mixture with 40-octyloxy-4-cyanobiphenyl. In both systems, wider temperature range of blue phase under shear with anomalous increase in viscosity associated with non- Newtonian flow behavior has been observed. Shear thinning followed by Newtonian flow is found in cholesteric phase and non-Newtonian flow behavior at high shear rates is seen in smectic-A phase. In cholesteryl nonanoate a small peak in the viscosity at cholesteric to smectic-A transition along with a shear rate dependent viscosity at higher shear rate is attributed to the type-II character of the compound. We find that the type-II character of the compound is further enhanced by mixing a small amount (20 wt%) of 40-octyloxy-4-cyanobiphenyl in cholesteryl nonanoate. No significant change in the temperature dependent rheological behavior is observed at the twistgrain- boundary-A to smectic-A transition. It is suggested that the small anomalous peak in the viscosity just above the twist-grain-boundary-A phase is due the existence of chiral line liquid phase. | en |
dc.language.iso | en | en |
dc.publisher | Taylor & Francis | en |
dc.relation.uri | http://dx.doi.org/10.1080/15421406.2011.572507 | en |
dc.rights | Taylor & Francis | en |
dc.subject | Shear | en |
dc.subject | type-II liquid crystals | en |
dc.subject | viscosity | en |
dc.title | Rheological properties of a chiral liquid crystal exhibiting type-II character | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (SCM) |
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File | Description | Size | Format | |
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2011_MCLC_547_39.pdf Restricted Access | Restricted access | 427.42 kB | Adobe PDF | View/Open Request a copy |
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