• Login
    View Item 
    •   Home
    • Office of Sponsored Research (OSR)
    • KAUST Funded Research
    • Publications Acknowledging KAUST Support
    • View Item
    •   Home
    • Office of Sponsored Research (OSR)
    • KAUST Funded Research
    • Publications Acknowledging KAUST Support
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Particle-scale structure in frozen colloidal suspensions from small-angle x-ray scattering

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Spannuth, Melissa
    Mochrie, S. G. J.
    Peppin, S. S. L.
    Wettlaufer, J. S.
    KAUST Grant Number
    KUK-C1-013-04
    Date
    2011-02-28
    Permanent link to this record
    http://hdl.handle.net/10754/599145
    
    Metadata
    Show full item record
    Abstract
    During directional solidification of the solvent in a colloidal suspension, the colloidal particles segregate from the growing solid, forming high-particle-density regions with structure on a hierarchy of length scales ranging from that of the particle-scale packing to the large-scale spacing between these regions. Previous work has concentrated mostly on the medium- to large-length scale structure, as it is the most accessible and thought to be more technologically relevant. However, the packing of the colloids at the particle scale is an important component not only in theoretical descriptions of the segregation process, but also to the utility of freeze-cast materials for new applications. Here we present the results of experiments in which we investigated this structure across a wide range of length scales using a combination of small-angle x-ray scattering and direct optical imaging. As expected, during freezing the particles were concentrated into regions between ice dendrites forming a microscopic pattern of high- and low-particle-density regions. X-ray scattering indicates that the particles in the high-density regions were so closely packed as to be touching. However, the arrangement of the particles does not conform to that predicted by standard interparticle pair potentials, suggesting that the particle packing induced by freezing differs from that formed during equilibrium densification processes. © 2011 American Physical Society.
    Citation
    Spannuth M, Mochrie SGJ, Peppin SSL, Wettlaufer JS (2011) Particle-scale structure in frozen colloidal suspensions from small-angle x-ray scattering. Phys Rev E 83. Available: http://dx.doi.org/10.1103/PhysRevE.83.021402.
    Sponsors
    We thank S. Narayanan, A. Sandy, and M. Sprung for assistance with the SAXS experiments, and X. Lu, J. Neufeld, E. Thomson, and L. Wilen for useful discussions. M.S. was supported by the Graduate Research Fellowship Program of the National Science Foundation (NSF). S.G.J.M. thanks the NSF for support via Grant No. DMR-0906697. S.S.L.P. acknowledges support from the King Abdullah University of Science and Technology (KAUST), Award No. KUK-C1-013-04. J.S.W. acknowledges support from the NSF Grant No. OPP0440841 and the US Department of Energy (DoE) Grant No. DE-FG02-05ER15741. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the US DoE, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review E
    DOI
    10.1103/PhysRevE.83.021402
    PubMed ID
    21405844
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevE.83.021402
    Scopus Count
    Collections
    Publications Acknowledging KAUST Support

    entitlement

    Related articles

    • Optical anisotropy in packed isotropic spherical particles: indication of nanometer scale anisotropy in packing structure.
    • Authors: Yamaguchi K, Inasawa S, Yamaguchi Y
    • Issue date: 2013 Feb 28
    • Are thermoresponsive microgels model systems for concentrated colloidal suspensions? A rheology and small-angle neutron scattering study.
    • Authors: Stieger M, Pedersen JS, Lindner P, Richtering W
    • Issue date: 2004 Aug 17
    • Structure and dynamics studies of concentrated micrometer-sized colloidal suspensions.
    • Authors: Zhang F, Allen AJ, Levine LE, Ilavsky J, Long GG
    • Issue date: 2013 Feb 5
    • Depletion-induced structure and dynamics in bimodal colloidal suspensions.
    • Authors: Sikorski M, Sandy AR, Narayanan S
    • Issue date: 2011 May 6
    • Inter-particle correlations in a hard-sphere colloidal suspension with polymer additives investigated by Spin Echo Small Angle Neutron Scattering (SESANS).
    • Authors: Washington AL, Li X, Schofield AB, Hong K, Fitzsimmons MR, Dalgliesh R, Pynn R
    • Issue date: 2014 May 7
    DSpace software copyright © 2002-2023  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.