Note: Production of sharp gold tips with high surface quality

Eisele, Max; Krüger, Michael; Schenk, Markus; Ziegler, Alexander; Hommelhoff, Peter
February 2011
Review of Scientific Instruments;Feb2011, Vol. 82 Issue 2, p026101
Academic Journal
We present a simple method to produce sharp gold tips with excellent surface quality based on electrochemical etching with potassium chloride. Radii of curvature lie in the range of 20-40 nm and the surface roughness is measured to less than 0.8 nm. The tips are well suited for field emission, field ion microscopy, and likely for tip-enhanced Raman scattering as well as tip-enhanced near-field imaging.


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