Morphology-controlled Copper Nanowire Synthesis and Magnetic Field Assisted Self-assembly

Authors

Srikar Rao Darmakkolla, Portland State UniversityFollow
Mitra Ghobadi, Portland State UniversityFollow
Lester Lampert, Portland State University
Amanda F. Pareira, Portland State University
Ana Jenike, Portland State University
Musa Tahir, Portland State University
Shankar B. Rananavare, Portland State UniversityFollow

Published In

Nanoscale

Document Type

Citation

Publication Date

2-7-2019

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.

Description

© The Royal Society of Chemistry 2019

Locate the Document

https://doi.org/10.1039/c8nr06876c

DOI

10.1039/c8nr06876c

Persistent Identifier

https://archives.pdx.edu/ds/psu/28472

Citation Details

Darmakkolla, S. R., Ghobadi, M., Lampert, L., Pareira, A. F., Jenike, A., Tahir, M., & Rananavare, S. B. (2019). Morphology-controlled copper nanowire synthesis and magnetic field assisted self-assembly. Nanoscale, 11(6), 2679–2686.