A molecular theory of smectic C liquid crystals made of rod-like molecules

Govind, A.S.; Madhusudana, N.V.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2812

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DC Field	Value	Language
dc.contributor.author	Govind, A.S.	-
dc.contributor.author	Madhusudana, N.V.	-
dc.date.accessioned	2007-06-13T09:10:27Z	-
dc.date.available	2007-06-13T09:10:27Z	-
dc.date.issued	2002	-
dc.identifier.citation	European Physical Journal E, 2002, Vol.9, p107-126	en
dc.identifier.issn	1292-8941	-
dc.identifier.issn	1292-895X(Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/2812	-
dc.description	Restricted Access.	en
dc.description.abstract	Organic compounds exhibiting the smectic C phase are made of rod-like molecules that have dipolar groups with lateral components. We argue that the off-axis character of the lateral dipolar groups can account for tilt in layered smectics (SmC, SmC*, SmI etc.). We develop a mean-field theory of the smectic C phase based on a single-particle potential of the form UC œ sin(2Š)cos{, consistent with the biaxial nature of the phase, where Š and { are the polar and azimuthal angles, respectively. The hard-rod interactions that favour the smectic A phase with zero tilt angle are also included. The theoretical phase diagrams compare favourably with experimental trends. Our theory also leads to the following results: i) a first-order smectic C to smectic A transition above some value of the McMillan parameter f, leading to a tricritical point on the smectic C to smectic A transition line and ii) a first-order smectic C to smectic C transition over a very small range of values of the model parameters. We have also extended the theory to include the next higher-order term in the tilting potential and to include the effect of different tilt angles for the molecular core and the chain in the SmC phase.	en
dc.format.extent	459217 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	EDP Sciences, Società Italiana di Fisica, Springer-Verlag	en
dc.relation.uri	http://dx.doi.org/ 10.1140/epje/i2002-10060-x	en
dc.rights	2002 EDP Sciences, Società Italiana di Fisica, Springer-Verlag	en
dc.title	A molecular theory of smectic C liquid crystals made of rod-like molecules	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

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