Author/Authors :
Errachid، نويسنده , , A. and Mills، نويسنده , , C.A. and Pla-Roca، نويسنده , , M. and Lopez، نويسنده , , M.J. and Villanueva-Camaٌas، نويسنده , , G. and Bausells، نويسنده , , J. and Crespo، نويسنده , , E. and Teixidor، نويسنده , , F. and Samitier، نويسنده , , J.، نويسنده ,
Abstract :
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 :
Nanoelectrodes , Focused ion beam , Cyclic voltammetry , Polypyrrole
