title: Production of Oxidation-Resistant Cu-Based Nanoparticles by Wire Explosion.
abstract: The low performance or high cost of commercially available conductive inks limits the advancement of printed electronics. This article studies the explosion of metal wires in aqueous solutions as a simple, low-cost, and environmentally friendly method to prepare metallic nanoparticles consisting of Cu and Cu alloys for use in affordable, highly conductive inks. Addition of 0.2 M ascorbic acid to an aqueous explosion medium prevented the formation of Cu2O shells around Cu nanoparticles, and allowed for the printing of conductive lines directly from these nanoparticles with no post-treatment. Cu alloy nanoparticles were generated from metal wires that were alloyed as purchased, or from two wires of different metals that were twisted together. Cu nanoparticles alloyed with 1% Sn, 5% Ag, 5% Ni and 30% Ni had electrical conductivities similar to Cu but unlike Cu, remained conductive after 24 hrs at 85 °C and 85% RH.
authors.affiliation: Duke University, Department of Chemistry, Durham, North Carolina 27708, United States.|Toyohashi University of Technology, Department of Electrical and Electronic Information Engineering, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
authors.forename: Go
authors.initials: G
authors.lastname: Kawamura
authors.affiliation: Duke University, Department of Chemistry, Durham, North Carolina 27708, United States.
authors.forename: Samuel
authors.initials: S
authors.lastname: Alvarez
authors.affiliation: Duke University, Department of Chemistry, Durham, North Carolina 27708, United States.
authors.forename: Ian E
authors.initials: IE
authors.lastname: Stewart
authors.affiliation: Duke University, Department of Chemistry, Durham, North Carolina 27708, United States.
authors.forename: Matthew
authors.initials: M
authors.lastname: Catenacci
authors.affiliation: Duke University, Department of Chemistry, Durham, North Carolina 27708, United States.|Tongji University, Department of Chemistry, Shanghai 200092, PR China.
authors.forename: Zuofeng
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Duke University, Department of Chemistry, Durham, North Carolina 27708, United States.|Korea Electrotechnology Research Institute, Creative and Fundamental Research Division, Changwon 642-120, Korea.
authors.forename: Yoon-Cheol
authors.initials: YC
authors.lastname: Ha