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Issue 4, 2018
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Optofluidic transport and manipulation of plasmonic nanoparticles by thermocapillary convection

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Abstract

Optothermal control of fluid motion has been suggested as a powerful way of controlling nanomaterials in micro- or nanofluidic samples. Methods based on merely thermal convection, however, often rely on high temperature for achieving fluid velocities suitable for most practical uses. Here, we demonstrate an optofluidic approach based on Marangoni or thermocapillary convection to steer and manipulate nano-objects with high accuracy at an air/liquid interface. By experiments and numerical simulations, we show that the fluid velocities achieved by this approach are more than three orders of magnitude stronger compared to natural convection and that it is possible to control the transport and position of single plasmonic nanoparticles over micrometer distances with high accuracy.

Graphical abstract: Optofluidic transport and manipulation of plasmonic nanoparticles by thermocapillary convection

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Publication details

The article was received on 15 Sep 2017, accepted on 09 Dec 2017 and first published on 11 Dec 2017


Article type: Paper
DOI: 10.1039/C7SM01863K
Citation: Soft Matter, 2018,14, 628-634
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    Optofluidic transport and manipulation of plasmonic nanoparticles by thermocapillary convection

    F. Winterer, C. M. Maier, C. Pernpeintner and T. Lohmüller, Soft Matter, 2018, 14, 628
    DOI: 10.1039/C7SM01863K

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