by Keyword: Solid contact

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.

JTD Keywords: Neutral carrier, Solid contact, Microelectrodes, Immobilization