Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2812
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dc.contributor.authorGovind, A.S.-
dc.contributor.authorMadhusudana, N.V.-
dc.date.accessioned2007-06-13T09:10:27Z-
dc.date.available2007-06-13T09:10:27Z-
dc.date.issued2002-
dc.identifier.citationEuropean Physical Journal E, 2002, Vol.9, p107-126en
dc.identifier.issn1292-8941-
dc.identifier.issn1292-895X(Online)-
dc.identifier.urihttp://hdl.handle.net/2289/2812-
dc.descriptionRestricted Access.en
dc.description.abstractOrganic 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.extent459217 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherEDP Sciences, Società Italiana di Fisica, Springer-Verlagen
dc.relation.urihttp://dx.doi.org/ 10.1140/epje/i2002-10060-xen
dc.rights2002 EDP Sciences, Società Italiana di Fisica, Springer-Verlagen
dc.titleA molecular theory of smectic C liquid crystals made of rod-like moleculesen
dc.typeArticleen
Appears in Collections:Research Papers (SCM)

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