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

Shuji Mononobe, R. Uma Maheswari, Motoichi Ohtsu

Research output: Contribution to journalArticle

12 Citations (Scopus)


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
Issue number8
Publication statusPublished - 1997 Oct


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this