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- W2034177636 abstract "A novel approach to the fabrication of metal ring–disk (RD) microelectrodes is presented that employs flexible chemical vapor deposition (CVD) and electrode modification techniques. Specifically, the development of a copper ring–disk microelectrode is described utilizing a combination of CVD coating, electroetching, and electroplating. Initially, a 25 μm diameter tungsten wire is concentrically coated by CVD with an insulating layer of silica, a layer of tungsten metal, and finally, a second outer layer of silica. The copper surface was prepared by first creating micrometer cavities by electrochemical etching the tungsten in hydroxide solutions followed by electrodeposition of copper from aqueous solutions of Cu(II). Each step of the process was characterized by scanning electron microscopy, optical microscopy, and cyclic voltammetry, demonstrating the preparation of a viable metal-based dual ring–disk microelectrode system. For the purpose of demonstrating the concept of introducing specific selectivity into the device, amperometric detection of galactose in 0.1 M NaOH was performed at +0.60 V in bulk solution and after flow injection analysis in a capillary column." @default.
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- W2034177636 date "2004-04-01" @default.
- W2034177636 modified "2023-09-27" @default.
- W2034177636 title "Copper ring–disk microelectrodes: fabrication, characterization, and application as an amperometric detector for capillary columns" @default.
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- W2034177636 doi "https://doi.org/10.1016/j.aca.2003.11.052" @default.
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