Initially, copper substrate surfaces are wet sanded using 600 grit sand paper, and then a final polishing was conducted in two steps using 1.0 and 0.5 μm Alpha Alumina particles (Sigma-Aldrich, Inc., USA) mixed at a 1:10 ratio with distilled water with a Spectrum System 1000 polisher (LECO, USA). Polystyrene spheres of 200 nm and 500 nm diameter (Sigma-Aldrich, Inc., USA) were electrophoretically deposited into colloidal crystals onto the polished copper substrates to form templates under a constant potential difference of 25 V for 1 hour. Spherical Cu nanocavities were synthesized by a potentiostatic deposition method (VersaSTAT IV, PAR Inc., USA) in a bath of 0.5 M copper sulfate solution (Sigma-Aldrich, Inc., USA) at a constant potential of −0.5 V.
Polystyrene spheres
Manufactured by Merck Group
Sourced in United States
Polystyrene spheres are a type of laboratory equipment used for various applications. They are small, uniform, and spherical particles made of polystyrene, a synthetic polymer. Polystyrene spheres are commonly used as a standard or reference material in various analytical techniques, such as flow cytometry, particle size analysis, and microscopy.
Automatically generated - may contain errors
2 protocols using polystyrene spheres
1
Fabrication of Copper Nanocavity Arrays
2
Fabrication of Self-Assembled Monolayers
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Deionized water (18.2 MΩ·cm)
was obtained from a Millipore filtration system. Glass substrates
were cleaned by oxygen plasma before use. Octadecanethiol (ODT, 98%),
16-mercaptohexadecanoic acid (MHDA), Cu(ClO4)2, polystyrene spheres (500 nm, 10 wt % in water, Product no. 59769,
Sigma-Aldrich) and methylene blue (MB, 99%) were purchased from Aldrich.
Acetone (99.5% purity) and absolute ethanol (99.5% purity) were used
as received from VWR without further purification.
was obtained from a Millipore filtration system. Glass substrates
were cleaned by oxygen plasma before use. Octadecanethiol (ODT, 98%),
16-mercaptohexadecanoic acid (MHDA), Cu(ClO4)2, polystyrene spheres (500 nm, 10 wt % in water, Product no. 59769,
Sigma-Aldrich) and methylene blue (MB, 99%) were purchased from Aldrich.
Acetone (99.5% purity) and absolute ethanol (99.5% purity) were used
as received from VWR without further purification.
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