Reproducible fabrication of a fiber probe with a nanometric protrusion for near-field optics

Shuji Mononobe, Masayuki Naya, Toshiharu Saiki, Motoichi Ohtsu

Research output: Contribution to journalArticle

65 Citations (Scopus)


We propose a new type of fiber probe with a nanometric protruding tip emerging from a metal film and describe a novel method, called the selective resin-coating method, for fabricating such probes. It is a reproducible etching process consisting of four steps and can be applied to silica fibers sharpened by selective chemical etching. With this method, we obtained tips with the apex diameter and the foot diameter of the protrusion being less than 10 and 30 nm, respectively, when the gold film was ∼120 nm thick.

Original languageEnglish
Pages (from-to)1496-1500
Number of pages5
JournalApplied Optics
Issue number7
Publication statusPublished - 1997 Mar 1



  • Dip-coating
  • Dispersion-compensating fiber
  • Etching
  • Evanescent light
  • Feedback
  • Near-field optics
  • Optical fiber
  • Probe
  • Scanning

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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