Etching gold tips suitable for tip-enhanced near-field optical microscopy

Lior Eligal; Ferhat Culfaz; Vincent McCaughan; Nicholas I. Cade; David Richards

Etching gold tips suitable for tip-enhanced near-field optical microscopy

Lior Eligal, Ferhat Culfaz, Vincent McCaughan, Nicholas I. Cade, David Richards

Physics

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

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.

Original language	English
Article number	033701
Journal	REVIEW OF SCIENTIFIC INSTRUMENTS
Volume	80
Issue number	3
Publication status	Published - 2009

Cite this

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title = "Etching gold tips suitable for tip-enhanced near-field optical microscopy",

abstract = "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.",

author = "Lior Eligal and Ferhat Culfaz and Vincent McCaughan and Cade, {Nicholas I.} and David Richards",

year = "2009",

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T1 - Etching gold tips suitable for tip-enhanced near-field optical microscopy

AU - Eligal, Lior

AU - Culfaz, Ferhat

AU - McCaughan, Vincent

AU - Cade, Nicholas I.

AU - Richards, David

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

M3 - Article

VL - 80

JO - REVIEW OF SCIENTIFIC INSTRUMENTS

JF - REVIEW OF SCIENTIFIC INSTRUMENTS

IS - 3

M1 - 033701

ER -

Etching gold tips suitable for tip-enhanced near-field optical microscopy

Abstract

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