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

Department of Polymer Engineering, Pukyong National University, Busan 48547, Korea
Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Korea
Department of Photonics and Nanoelectronics, Hanyang University, Ansan, Kyunggi-do 15588, Korea
Author to whom correspondence should be addressed.
Nanomaterials 2017, 7(10), 335;
Received: 25 September 2017 / Revised: 11 October 2017 / Accepted: 16 October 2017 / Published: 19 October 2017
PDF [2871 KB, uploaded 19 October 2017]


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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