论文信息 - Note: electrochemical etching of sharp iridium tips.

Note: electrochemical etching of sharp iridium tips.

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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