Layering of bidisperse charged nanoparticles in sedimentation
Layering of bidisperse charged nanoparticles in sedimentation
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2020
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Soft Matter ; 16 (2020), 20. - pp. 4718-4722. - Royal Society of Chemistry (RSC). - ISSN 1744-683X. - eISSN 1744-6848
Abstract
Bidisperse mixtures of charged nanoparticles form separate layers upon centrifugation as a result of minimization of the system's free energy in sedimentation-diffusion equilibrium. Different factors were investigated experimentally for their effects on the layering, and are supported by theoretical calculations of the full sedimentation profiles. Surprisingly, lighter/smaller nanoparticles can even sink below heavier/larger ones when the particle surface charge is carefully tuned. This study provides deeper insights into the control of layering in polydisperse particle mixtures during sedimentation.
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XU, Xufeng, P. Maarten BIESHEUVEL, Helmut CĂ–LFEN, Evan SPRUIJT, 2020. Layering of bidisperse charged nanoparticles in sedimentation. In: Soft Matter. Royal Society of Chemistry (RSC). 16(20), pp. 4718-4722. ISSN 1744-683X. eISSN 1744-6848. Available under: doi: 10.1039/d0sm00588fBibTex
@article{Xu2020-05-28Layer-49951, year={2020}, doi={10.1039/d0sm00588f}, title={Layering of bidisperse charged nanoparticles in sedimentation}, number={20}, volume={16}, issn={1744-683X}, journal={Soft Matter}, pages={4718--4722}, author={Xu, Xufeng and Biesheuvel, P. Maarten and Cölfen, Helmut and Spruijt, Evan} }
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