| Structural changes in the 6CHBT liquid crystal doped with spherical, rodlike, and chainlike magnetic particles. | |
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MedLine Citation:
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PMID: 18763968 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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In this work the 4-(trans- 4'-n -hexylcyclohexyl)-isothiocyanatobenzene (6CHBT) liquid crystal was doped with differently shaped magnetite nanoparticles. The structural changes were observed by capacitance measurements and showed significant influence of the shape and size of the magnetic particles on the magnetic Fréedericksz transition. For the volume concentration phi= 2 x 10(-4) of the magnetic particles, the critical magnetic field was established for the pure liquid crystal, and for liquid crystals doped with spherical, chainlike, and rodlike magnetic particles. The influence of the magnetic field depends on the type of anchoring, which is characterized by the density of anchoring energy and by the initial orientation between the liquid crystal molecules and the magnetic moment of the magnetic particles. The experimental results indicated soft anchoring in the case of spherical magnetic particles and rigid anchoring in the case of rodlike and chainlike magnetic particles, with parallel initial orientation between the magnetic moments of the magnetic particles and director. |
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Authors:
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Peter Kopcanský; Natália Tomasovicová; Martina Koneracká; Vlasta Závisová; Milan Timko; Anezka Dzarová; Adriana Sprincová; Nándor Eber; Katalin Fodor-Csorba; Tibor Tóth-Katona; Aniko Vajda; Jan Jadzyn |
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Publication Detail:
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Type: Journal Article Date: 2008-07-03 |
Journal Detail:
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Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 78 ISSN: 1539-3755 ISO Abbreviation: Phys Rev E Stat Nonlin Soft Matter Phys Publication Date: 2008 Jul |
Date Detail:
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Created Date: 2008-09-03 Completed Date: 2008-10-17 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101136452 Medline TA: Phys Rev E Stat Nonlin Soft Matter Phys Country: United States |
Other Details:
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Languages: eng Pagination: 011702 Citation Subset: - |
Affiliation:
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Institute of Experimental Physics, Slovak Academy of Sciences, Watsonová 47, 04001 Kosice, Slovakia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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