Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 80, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3090174
Keywords
electrochemistry; etching; force measurement; gold; optical fabrication; optical materials; optical microscopy; quantum dots; shear strength
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Funding
- Engineering and Physical Sciences Research Council
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We describe a simple method of fabricating gold tips for tip-enhanced near-field optical microscopy using a single step direct current electrochemical etch. Smooth gold tips with a radius of curvature similar to 40 nm and with an aspect ratio suitable for shear force measurement have been produced in a few minutes. A detailed analysis of the etching process has enabled production of reproducible high quality tips. Near field images of single quantum dots using tips etched with this technique are shown.
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