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Morphology-controlled copper nanowire synthesis and magnetic field assisted self-assembly

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Abstract

Morphology, dimensions, crystalline structure and compositions of nanomaterials are very critical in determining their unique characteristics. Here we report how the reducing agent concentration affects the surface morphology of copper nanowires and establish the optimized reaction conditions to synthesize high aspect ratio nanowires with a smooth surface. Also, reported is the magnetic field assisted technique to control the orientational and positional ordering of cupronickel nanowires (Cu/Ni NWs) on a large-scale area. A combination of magnetic field, surface derivatization and photolithographic techniques allowed self-assembly of Cu/Ni NWs into channels. The channel resistance as a function of the applied magnetic field during fabrication shows an anomalous decrease owing to the positional end-to-end alignment of NWs. Magnetic field and areal NW density dependence of NW sheet resistance in channels is presented and analyzed using scaling theoretical models.

Graphical abstract: Morphology-controlled copper nanowire synthesis and magnetic field assisted self-assembly

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Publication details

The article was received on 25 Aug 2018, accepted on 17 Nov 2018 and first published on 20 Nov 2018


Article type: Paper
DOI: 10.1039/C8NR06876C
Citation: Nanoscale, 2019, Advance Article
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    Morphology-controlled copper nanowire synthesis and magnetic field assisted self-assembly

    S. R. Darmakkolla, M. Ghobadi, L. Lampert, A. F. Pareira, A. Jenike, M. Tahir and S. B. Rananavare, Nanoscale, 2019, Advance Article , DOI: 10.1039/C8NR06876C

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