19 October 2006 Transport and assembly of nanowires in suspension
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Abstract
Nanowires are potentially important constituents for nanoscale devices. Manipulation of nanowires in suspension in order to assemble them for device applications has been a formidable problem. Previously most methods have involved the use of external magnetic fields acting on magnetic nanowires. Using ac electric fields applied to strategically designed microelectrodes, we show how nanowires, both magnetic and nonmagnetic, in suspension can be driven to align, to chain, to accelerate in directions parallel and perpendicular to its orientation, to concentrate onto designated places, and to disperse in a controlled manner with high efficiency despite an extremely low Reynolds number (of the order of 10-5). This method of manipulating nanowires can also be applied to other small elongated entities such as carbon nanotubes.
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D. L. Fan, D. L. Fan, F. Q. Zhu, F. Q. Zhu, R. C. Cammarata, R. C. Cammarata, C. L. Chien, C. L. Chien, } "Transport and assembly of nanowires in suspension", Proc. SPIE 6370, Nanomaterial Synthesis and Integration for Sensors, Electronics, Photonics, and Electro-Optics, 637001 (19 October 2006); doi: 10.1117/12.683946; https://doi.org/10.1117/12.683946
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