Fabrication and Characterisation of Diamond Ultramicroelectrodes of Diameter < 25 Microns for use in Electroanalysis, Sensing and Imaging Applications

Autor:	Holt, KB, Caruana, DJ, Raja, J, Hu, J, Foord, JS
Rok vydání:	2007
Předmět:	Fabrication Materials science chemistry.chemical_element Diamond Nanotechnology Tungsten engineering.material Nanocrystalline material Microelectrode Microcrystalline chemistry Electrode engineering Deposition (law)
Zdroj:	ECS Transactions. 3:37-45
ISSN:	1938-6737 1938-5862
DOI:	10.1149/1.2753282
Popis:	Boron-doped diamond (BDD) ultramicroelectrodes (UMEs) were fabricated by three methods: (1) CVD deposition of microcrystalline BDD onto sharpened tungsten wires; (2) CVD deposition of nanocrystalline BDD by bias-enhanced growth onto sharpened tungsten wires and (3) selective insulation of BDD 'splinters' formed by breaking a larger BDD electrode. The first two methods produced very sharp, coated wires that could be insulated using a variety of techniques, including nail varnish, electrophoretic paint and epoxy. Good control over exposed electrode size and geometry were achieved and UME electrochemical behavior was observed. The 'splinter' electrodes formed were also of microelectrode dimensions and although there was less control over electrode geometry they were more robust and performed better in the presence of certain redox mediators. copyright The Electrochemical Society.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8c1b1f10c9d5b5ccb6cb64d6b2efc40 https://doi.org/10.1149/1.2753282 Zobrazit plný text záznamu