Fabrication of a pencil-shaped fiber probe with a nanometric protrusion from a metal film for near-field optical microscopy

Shuji Mononobe, Rajagopalan Umamaheswari, Motoichi Ohtsu

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We propose a method to fabricate a probe with a nanometric protrusion for near-field optical microscopy. The method involves a tapering process based on selective etching of a GeO2-doped fiber in a buffered hydrogen fluoride solution and a metallizing process by vacuum evaporation and chemical polishing. We fabricated a tapered probe which has a protrusion emerging from a metal film. The protrusion has an apex diameter less than 10nm and a foot diameter less than 20nm. Employing the probe, we succeeded in obtaining a highly resolved image of 20nm gold particles.

Original languageEnglish
Pages (from-to)229-233
Number of pages5
JournalOptics Express
Volume1
Issue number8
DOIs
Publication statusPublished - 1997 Jan 1
Externally publishedYes

Fingerprint

metal films
near fields
microscopy
fabrication
fibers
probes
metallizing
hydrofluoric acid
tapering
polishing
emerging
apexes
etching
evaporation
gold
vacuum

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Fabrication of a pencil-shaped fiber probe with a nanometric protrusion from a metal film for near-field optical microscopy. / Mononobe, Shuji; Umamaheswari, Rajagopalan; Ohtsu, Motoichi.

In: Optics Express, Vol. 1, No. 8, 01.01.1997, p. 229-233.

Research output: Contribution to journalArticle

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