Source:http://linkedlifedata.com/resource/pubmed/id/17641818
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
2007-8-16
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pubmed:abstractText |
A binary mixture of an antiferroelectric liquid-crystal material containing a selenium atom and a highly chiral dopant is investigated using resonant X-ray scattering. This mixture exhibits a remarkably wide four-layer intermediate smectic phase, the structure of which is investigated over a temperature range of 16K. Analysis of the resonant X-ray scattering data allows accurate measurement of both the helicoidal pitch and the distortion angle as a function of temperature. The former decreases rapidly as the SmC* phase is approached, whilst the latter remains constant over the temperature range studied at 8 degrees +/-3 degrees. We also observe that the senses of the helicoidal pitch and the unit cell of the repeating four-layer structure are opposite in this mixture and that there is no pitch inversion over the temperature range studied.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
1292-8941
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
23
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
281-7
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pubmed:meshHeading |
pubmed-meshheading:17641818-Complex Mixtures,
pubmed-meshheading:17641818-Computer Simulation,
pubmed-meshheading:17641818-Liquid Crystals,
pubmed-meshheading:17641818-Models, Chemical,
pubmed-meshheading:17641818-Phase Transition,
pubmed-meshheading:17641818-Selenium,
pubmed-meshheading:17641818-Temperature,
pubmed-meshheading:17641818-X-Ray Diffraction
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pubmed:year |
2007
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pubmed:articleTitle |
Deduction of the temperature-dependent structure of the four-layer intermediate smectic phase using resonant X-ray scattering.
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pubmed:affiliation |
School of Physics and Astronomy, University of Manchester, Manchester, UK.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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