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Self-Assembled Structures of Disc-Like Colloidal Particles
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
2011 (English)In: Trends in colloid andinterface science XXIV / [ed] Viktor Starov, Karel Procházka, Springer , 2011, 61-65 p.Conference paper, Published paper (Refereed)
Abstract [en]

Self-assembly is an important phenomenon that leads to formation of interesting and novel structures in colloidal dispersions.  We present experimental evidence for the existence of a ‘cubatic’ phase in a colloidal dispersion of disc-like particles of nickel hydroxide colloidal dispersions.  In this structure, disc-like particles self-assemble as domains of a few parallel discs and the orientation tends to be orthogonal in adjacent domains.  This phase has been predicted previously by computer simulations.  The domains are approximately equiaxial and are predicted to exist only within a limited range of aspect ratios and volume fractions.  We have used the real space technique of cryo-transmission electron microscopy in our studies as this locally ordered structure could not be identified readily using scattering techniques, since the patterns are expected to be similar to those of isotropic liquid phases.

Place, publisher, year, edition, pages
Springer , 2011. 61-65 p.
Series
Progress in Colloid and Polymer Science, ISSN 0340-255X ; 138
Keyword [en]
Cubatic Phase, Plate-like colloids, Cryotransmission electron microscopy
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-152871DOI: 10.1007/978-3-642-19038-4_11ISI: 000295091800011ISBN: 9783642190377 (print)OAI: oai:DiVA.org:uu-152871DiVA: diva2:414165
Conference
24th Meeting of the European-Colloid-and-Interface-Society (ECIS), September 5-10, 2010, Prague, Czech Republic
Available from: 2011-05-02 Created: 2011-05-02 Last updated: 2011-11-02Bibliographically approved

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Qazi, S. Junaid S.Rennie, Adrian

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