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Precise Placement of Metallic Nanowires on a Substrate by Localized Electric Fields and Inter-Nanowire Electrostatic Interaction

1
Department of Polymer Engineering, Pukyong National University, Busan 48547, Korea
2
Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Korea
3
Department of Photonics and Nanoelectronics, Hanyang University, Ansan, Kyunggi-do 15588, Korea
*
Author to whom correspondence should be addressed.
Nanomaterials 2017, 7(10), 335; https://doi.org/10.3390/nano7100335
Received: 25 September 2017 / Revised: 11 October 2017 / Accepted: 16 October 2017 / Published: 19 October 2017
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Abstract

Placing nanowires at the predetermined locations on a substrate represents one of the significant hurdles to be tackled for realization of heterogeneous nanowire systems. Here, we demonstrate spatially-controlled assembly of a single nanowire at the photolithographically recessed region at the electrode gap with high integration yield (~90%). Two popular routes, such as protruding electrode tips and recessed wells, for spatially-controlled nanowire alignment, are compared to investigate long-range dielectrophoretic nanowire attraction and short-range nanowire-nanowire electrostatic interaction for determining the final alignment of attracted nanowires. Furthermore, the post-assembly process has been developed and tested to make a robust electrical contact to the assembled nanowires, which removes any misaligned ones and connects the nanowires to the underlying electrodes of circuit. View Full-Text
Keywords: nanowire; deterministic assembly; dielectrophoresis; nanodevices nanowire; deterministic assembly; dielectrophoresis; nanodevices
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Choi, U.H.; Kim, J. Precise Placement of Metallic Nanowires on a Substrate by Localized Electric Fields and Inter-Nanowire Electrostatic Interaction. Nanomaterials 2017, 7, 335.

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