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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
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.
0934-0866
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
9ead62c9-7a1c-4f84-81f3-918e3683b909
El-Sagheer, Afaf H.
05b8295a-64ad-4fdf-ad57-c34934a46c04
Brown, Tom
a64aae36-bb30-42df-88a2-11be394e8c89
Kanaras, Antonios G.
667ecfdc-7647-4bd8-be03-a47bf32504c7
Werts, Martinus H.V.
750f9843-296d-40e6-9ef0-75cae4a042cd

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).

Record type: Article

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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sedimentation_final_HAL - Accepted Manuscript
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More information

Accepted/In Press date: 29 June 2017
e-pub ahead of print date: 25 July 2017

Identifiers

Local EPrints ID: 413807
URI: https://eprints.soton.ac.uk/id/eprint/413807
ISSN: 0934-0866
PURE UUID: d6db7b5a-79cd-4acd-b252-d2bfd64e4ba6
ORCID for Antonios G. Kanaras: ORCID iD orcid.org/0000-0002-9847-6706

Catalogue record

Date deposited: 06 Sep 2017 16:31
Last modified: 15 Aug 2019 04:43

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Contributors

Author: Johanna Midelet
Author: Afaf H. El-Sagheer
Author: Tom Brown
Author: Martinus H.V. Werts

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