6533b829fe1ef96bd128a458

RESEARCH PRODUCT

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

Jana AndzaneDonats ErtsRaimonds PoplausksUldis MalinovskisIndrikis MuiznieksArturs ViksnaJ. Svirksts

subject

Materials science:NATURAL SCIENCES::Chemistry [Research Subject Categories]AnodizingNanoporousGeneral Chemical EngineeringOxidechemistry.chemical_elementNanotechnologyGeneral ChemistryNanoporechemistry.chemical_compoundchemistryEtching (microfabrication)AluminiumAluminium oxideLayer (electronics)

description

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.

yearjournalcountryeditionlanguage
2014-09-24RSC Adv.
https://doi.org/10.1039/c4ra08509d