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  • Nano Express
  • Open Access

Modification of alumina matrices through chemical etching and electroless deposition of nano-Au array for amperometric sensing

  • 1Email author,
  • 1,
  • 2,
  • 3 and
  • 1
Nanoscale Research Letters20072:130

  • Received: 29 December 2006
  • Accepted: 26 January 2007
  • Published:


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.


  • EIS
  • Modification morphology
  • Nanoparticles
  • Porous alumina

[127] and Supplementary Material 1


Authors’ Affiliations

Institute of Chemistry, Goštauto 9, 01108 Vilnius, Lithuania
Institute of Biochemistry, Mokslininkų 12, 08412 Vilnius, Lithuania
Instituto Nacionale di Fisica Nucleare, viale Berti-Pichat 6/2, 40127 Bologna, Italia


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© to the authors 2007