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Glassy Behavior of a Tin Dioxide Nanoparticle Suspension

Dilute suspensions of charged colloidal particles with a short-range attraction and long-range repulsion can exhibit a variety of arrested states. In many applications using suspensions of charged nanoparticles, the optimization of the process requires the understanding of the mechanism underlying t...

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Published in:Langmuir 2015-12, Vol.31 (47), p.13022-13028
Main Authors: Wakabayashi, Atsumi, Goto, Tatsuhiko, Dobashi, Toshiaki, Maki, Yasuyuki
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Language:English
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creator Wakabayashi, Atsumi
Goto, Tatsuhiko
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description Dilute suspensions of charged colloidal particles with a short-range attraction and long-range repulsion can exhibit a variety of arrested states. In many applications using suspensions of charged nanoparticles, the optimization of the process requires the understanding of the mechanism underlying the stability and the rheological properties of the suspensions. In an attempt to clarify the solidification mechanism for dilute suspensions of tin dioxide (SnO2) nanoparticles, we present dynamic viscoelasticity, dynamic and static light scattering, and small-angle X-ray scattering experiments on a SnO2 nanoparticle suspension with a nanoparticle concentration of 25.0 wt % (volume fraction φ = 0.045). The behaviors of the observed dynamic and static structure factors reveal that the aging of SnO2 nanoparticles is Wigner glassy rather than gel-like.
doi_str_mv 10.1021/acs.langmuir.5b03310
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title Glassy Behavior of a Tin Dioxide Nanoparticle Suspension
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