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  Enhancing the magnetoviscosity of ferrofluids by the addition of biological nanotubes

Wu, Z., Mueller, A., Degenhard, S., Ruff, S. E., Geiger, F., Bittner, A. M., et al. (2010). Enhancing the magnetoviscosity of ferrofluids by the addition of biological nanotubes. ACS Nano, 4(8), 4531-4538. doi:10.1021/nn100645e.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-1139-B Version Permalink: http://hdl.handle.net/21.11116/0000-0002-113A-A
Genre: Journal Article

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 Creators:
Wu, Zhenyu, Author
Mueller, Anna, Author
Degenhard, Sven, Author
Ruff, S. Emil, Author
Geiger, Fania1, Author              
Bittner, Alexander M., Author
Wege, Christina, Author
Krill, Carl E., Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

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Free keywords: ferrofluid; TMV-like particles; bioengineering; magnetoviscosity; nanocomposite; biotemplate
 Abstract: Applying a magnetic field to many ferrofluids leads to a significant increase in viscosity, but the phenomenon has yet to find technological exploitation because of the thinning caused by even weak shear flows. We have discovered that the addition of plant-virus-derived nanotubes to a commercial ferrofluid can give rise to a dramatic enhancement in magnetoviscosity and a suppression of shear thinning. The dependence of this effect on nanotube aspect ratio and surface charge, both of which were varied biotechnologically, is consistent with a "scaffolding" of magnetic particles into quasi-linear arrays. Direct support for this explanation is derived from transmission electron micrographs, which reveal a marked tendency for the magnetic nanoparticles to decorate the outside surface of the virus nanotubes.

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Language(s): eng - English
 Dates: 2010-07-222010
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
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Title: ACS Nano
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 4 (8) Sequence Number: - Start / End Page: 4531 - 4538 Identifier: ISSN: 1936-0851
CoNE: https://pure.mpg.de/cone/journals/resource/1936-0851