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)


    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
    Publication statusPublished - 1999 Apr


    • 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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