Note: Electrochemical etching of sharp iridium tips

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 2011 English Publisher:AIP PublishingJournal:Review of Scientific Instruments, volume 82 (issn: 0034-6748, eissn: 1089-7623,

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Authors: Jean-Benoît, Lalanne; William, Paul; David, Oliver; Peter H, Grütter;

doi: 10.1063/1.3662473

pmid: 22129021

Note: Electrochemical etching of sharp iridium tips

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Abstract

We describe an etching procedure for the production of sharp iridium tips with apex radii of 15–70 nm, as determined by scanning electron microscopy, field ion microscopy, and field emission measurements. A coarse electrochemical etch followed by zone electropolishing is performed in a relatively harmless calcium chloride solution with high success rate.

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