The sedimentation of colloidal nanoparticles in solution and its study using quantitative digital photography
The sedimentation of colloidal nanoparticles in solution and its study using quantitative digital photography
Sedimentation and diffusion are important aspects of the behavior of colloidal
nanoparticles in solution, and merit attention during the synthesis, characterization, and application of nanoparticles. Here, the sedimentation of nanoparticles is studied quantitatively using digital photography and a simple model based on the Mason–Weaver equation. Good agreement between experimental time-lapse photography and numerical solutions of the model is found for a series of gold nanoparticles. The new method is extended to study for the first time the gravitational sedimentation of DNA-linked gold nanoparticle dimers as a model system of a higher complexity structure. Additionally, simple formulas are derived for estimating suitable
parameters for the preparative centrifugation of nanoparticle solutions.
Midelet, Johanna
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El-Sagheer, Afaf H.
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Brown, Tom
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Kanaras, Antonios G.
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Werts, Martinus H.V.
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Midelet, Johanna
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El-Sagheer, Afaf H.
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Brown, Tom
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Kanaras, Antonios G.
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Werts, Martinus H.V.
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Midelet, Johanna, El-Sagheer, Afaf H., Brown, Tom, Kanaras, Antonios G. and Werts, Martinus H.V.
(2017)
The sedimentation of colloidal nanoparticles in solution and its study using quantitative digital photography.
Particle & Particle Systems Characterization.
(doi:10.1002/ppsc.201700095).
Abstract
Sedimentation and diffusion are important aspects of the behavior of colloidal
nanoparticles in solution, and merit attention during the synthesis, characterization, and application of nanoparticles. Here, the sedimentation of nanoparticles is studied quantitatively using digital photography and a simple model based on the Mason–Weaver equation. Good agreement between experimental time-lapse photography and numerical solutions of the model is found for a series of gold nanoparticles. The new method is extended to study for the first time the gravitational sedimentation of DNA-linked gold nanoparticle dimers as a model system of a higher complexity structure. Additionally, simple formulas are derived for estimating suitable
parameters for the preparative centrifugation of nanoparticle solutions.
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Accepted/In Press date: 29 June 2017
e-pub ahead of print date: 25 July 2017
Identifiers
Local EPrints ID: 413807
URI: http://eprints.soton.ac.uk/id/eprint/413807
ISSN: 0934-0866
PURE UUID: d6db7b5a-79cd-4acd-b252-d2bfd64e4ba6
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Date deposited: 06 Sep 2017 16:31
Last modified: 16 Mar 2024 05:35
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Contributors
Author:
Johanna Midelet
Author:
Afaf H. El-Sagheer
Author:
Martinus H.V. Werts
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