Reference : Chiral smectic C subphases induced by mixing a bistereogenic antiferroelectric liquid...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/20552
Chiral smectic C subphases induced by mixing a bistereogenic antiferroelectric liquid crystal with a non-chiral liquid crystal
English
Lagerwall, Jan mailto [Universit├Ąt Stuttgart]
Giesselmann, Frank [> >]
Rauch, Sebastian [> >]
Heppke, Gerd [> >]
Rudquist, Per [> >]
Lagerwall, S. T [> >]
2005
Ferroelectrics
Taylor & Francis Ltd
315
221-230
Yes (verified by ORBilu)
International
0015-0193
[en] By mixing a bistereogenic antiferroelectric liquid crystal (AFLC) compound, exhibiting only the SmQ and SmCa mesophases, with the achiral N-SmC liquid crystal HOAB we could induce all three AFLC SmC-type subphases, SmCalpha, SmCbeta and SmCgamma. This seems to be in contradiction with two recent postulations regarding the subphase stability, one of which suggests that the subphases appear as a result of strong chiral interactions, the other that these phases require high smectic order something one would generally not expect in mixtures. We have studied the helical pitch, optical tilt angle, spontaneous polarization and the x-ray diffraction due to the smectic layering, as a function of mixing ratio in order to better understand the relation between phase sequence and mixture composition. The smectic layer spacing shows a strongly non-linear behavior suggesting that the basic structure of the pure AFLC substance is retained up to a HOAB content of about 75\%.
Researchers
http://hdl.handle.net/10993/20552
10.1080/00150190490510438
Dublin, Ireland

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Lagerwall 2004 9062.pdfAuthor postprint4.45 MBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.