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Issue 89, 2014
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Electrochemically etched sharp aluminium probes with nanoporous aluminium oxide coatings: demonstration of addressed DNA delivery

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Abstract

Electrochemical etching of metal wires is widely used to fabricate sharp probes for use in scanning tunnelling microscopy. In this work an electrochemical fabrication method for sharp aluminium probes coated with nanoporous anodised aluminium oxide (AAO) layer is described. The method presented here involves simultaneous anodisation and etching of aluminium wires. The probe apex radius as well as the nanopore length and diameter depend on the etching mode, which could be direct current (DC), alternating current (AC), or pulsed voltage mode (PVM). The probes, coated with a nanoporous AAO layer, were used to demonstrate addressed DNA delivery.

Graphical abstract: Electrochemically etched sharp aluminium probes with nanoporous aluminium oxide coatings: demonstration of addressed DNA delivery

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Publication details

The article was received on 11 Aug 2014, accepted on 24 Sep 2014 and first published on 24 Sep 2014


Article type: Paper
DOI: 10.1039/C4RA08509D
Citation: RSC Adv., 2014,4, 48480-48485
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    Electrochemically etched sharp aluminium probes with nanoporous aluminium oxide coatings: demonstration of addressed DNA delivery

    R. Poplausks, U. Malinovskis, J. Andzane, J. Svirksts, A. Viksna, I. Muiznieks and D. Erts, RSC Adv., 2014, 4, 48480
    DOI: 10.1039/C4RA08509D

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