Au/Cu Bimetallic Nanoparticles via Double-Target Sputtering
onto a Liquid Polymer
Version 2 2017-10-18, 19:39
Version 1 2017-10-18, 19:36
Posted on 2017-10-18 - 19:39
Alloy
nanoparticles (NPs) of a bimetal system, Au/Cu, that form
intermetallic compounds in a bulk state have been successfully produced
using a double-target sputtering technique onto a low-cost and biocompatible
liquid polymer (polyethylene glycol, PEG). The formation of an Au/Cu
solid solution alloy in individual NPs was revealed by scanning transmission
electron microscopy–energy-dispersive X-ray elemental mapping
analysis. Altering the sputter currents for Au and Cu targets resulted
in a tailored NP composition, but the particle sizes did not significantly
vary. We found similar structures, sizes, and optical properties of
Au/Cu NPs obtained by double-head sputtering on carbon-coated transmission
electron microscopy grids or PEG and by Au/Cu alloy target sputtering.
Random alloy formation occurred in matrix sputtering using double-target
heads. This method is advantageous for manipulating the alloy composition
through highly independent control of sputter parameters for each
metal target.
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Nguyen, Mai Thanh; Zhang, Hong; Deng, Lianlian; Tokunaga, Tomoharu; Yonezawa, Tetsu (2017). Au/Cu Bimetallic Nanoparticles via Double-Target Sputtering
onto a Liquid Polymer. ACS Publications. Collection. https://doi.org/10.1021/acs.langmuir.7b03194
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AUTHORS (5)
MN
Mai Thanh Nguyen
HZ
Hong Zhang
LD
Lianlian Deng
TT
Tomoharu Tokunaga
TY
Tetsu Yonezawa
KEYWORDS
metal targetdouble-target headsmapping analysisPEGform intermetallic compoundssolution alloyNP compositionparticle sizesRandom alloy formationcarbon-coated transmission electron microscopy gridsDouble-Target Sputteringpolyethylene glycolLiquid Polymer Alloy nanoparticlesbulk statebimetal systemalloy compositionCu targets