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Independent Positioning of Magnetic Nanomotors

Mandal, Pranay and Chopra, Vaishali and Ghosh, Ambarish (2015) Independent Positioning of Magnetic Nanomotors. In: ACS NANO, 9 (5). pp. 4717-4725.

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Official URL: http://dx.doi.org/ 10.1021/acsnano.5b01518

Abstract

There is considerable interest in powering and maneuvering nanostructures remotely in fluidic media using noninvasive fuel-free methods, for which small homogeneous magnetic fields are ideally suited. Current strategies include helical propulsion of chiral nanostructures, cilia-like motion of flexible filaments, and surface assisted translation of asymmetric colloidal doublets and magnetic nanorods, in all of which the individual structures are moved in a particular direction that is completely tied to the characteristics of the driving fields. As we show in this paper, when we use appropriate magnetic field configurations and actuation time scales, it is possible to maneuver geometrically identical nanostructures in different directions, and subsequently position them at arbitrary locations with respect to each other. The method reported here requires proximity of the nanomotors to a solid surface, and could be useful in applications that require remote and independent control over individual components in microfluidic environments.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Keywords: nanopropulsion; magnetic actuation; glancing angle deposition; active matter; independent control; nanomotors
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
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Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 19 Jul 2015 09:20
Last Modified: 19 Jul 2015 09:20
URI: http://eprints.iisc.ac.in/id/eprint/51825

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