Nanoscopic studies investigated by hybrid SNOM/STM

K. Nakajima, R. Micheletto, K. Mitsui, T. Isoshima, M. Hara, T. Wada, H. Sasabe, W. Knoll

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

In order to improve the spatial resolution in scanning near-field optical microscopy (SNOM), we designed a hybrid system of illumination mode SNOM integrated with scanning tunnelling microscopy (STM) by introducing a metal-coated optical fiber tip with a nanometer-scale aperture. The aperture is also covered with a thin metal layer, thus the top of the aperture acts as an STM tip. We employed several materials to show the capability of our hybrid SNOM/STM system as a tool to investigate nanoscopic phenomena. We present a simultaneous SNOM/STM imaging of Au(111), where the SNOM image has a lateral resolution of the order of nanometers, quite comparable to that of the STM image. An azobenzene dye molecule embedded in liquid crystalline cyanobiphenyl molecules on MoS 2 was also investigated.

Original languageEnglish
Pages (from-to)520-524
Number of pages5
JournalApplied Surface Science
Volume144-145
DOIs
Publication statusPublished - 1999 Apr
Externally publishedYes

Keywords

  • Boundary-sensitive detection
  • Doubly metal-coated optical fiber tip
  • Scanning near-field optical microscopy
  • Scanning tunnelling microscopy

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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