by Keyword: Solid contact

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Errachid, A., Mills, C. A., Pla, M., Lopez, M. J., Villanueva, G., Bausells, J., Crespo, E., Teixidor, F., Samitier, J., (2008). Focused ion beam production of nanoelectrode arrays Materials Science & Engineering C 5th Maghreb/Europe Meeting on Materials and Their Applications for Devices and Physical, Chemical and Biological Sensors (MADICA 2006) (ed. -----), Elsevier Science (Mahdia, Tunisia) 28, (5-6), 777-780

We present a method for the production of nanoelectrodes using focussed ion beam techniques (FIB). The electrodes utilise nanometric holes milled in a silicon nitride based pasivation layer, followed by wet etching of a silicon oxide based pasivation layer, to expose an underlying gold electrode. After functionalisation using a surface assembled monolayer and an electrochemically grown polypyrrole, these gold nanoelectrodes have been tested, via cyclic voltammetry, in the detection of [Fe(CN)(6)](4-/3-) ions. The nanoelectrodes will be used to investigate the electrical properties of nanometric biological specimen.

Keywords: Neutral carrier, Solid contact, Microelectrodes, Immobilization