Modification of alumina matrices through chemical etching and electroless deposition of nano-Au array for amperometric sensing
1 Institute of Chemistry, Goštauto 9, 01108, Vilnius, Lithuania
2 Institute of Biochemistry, Mokslininkų 12, 08412, Vilnius, Lithuania
3 Instituto Nacionale di Fisica Nucleare, viale Berti-Pichat 6/2, 40127, Bologna, Italia
Nanoscale Research Letters 2007, 2:130-134 doi:10.1007/s11671-007-9043-yPublished: 2 March 2007
Simple nanoporous alumina matrix modification procedure, in which the electrically highly insulating alumina barrier layer at the bottom of the pores is replaced with the conductive layer of the gold beds, was described. This modification makes possible the direct electron exchange between the underlying aluminum support and the redox species encapsulated in the alumina pores, thus, providing the generic platform for the nanoporous alumina sensors (biosensors) with the direct amperometric signal readout fabrication.