Imaging of biological samples by a collection-mode photon scanning tunneling microscope with an apertured probe

Masayuki Naya, Shuji Mononobe, Rajagopalan Umamaheswari, Tosiharu Saiki, Motoichi Ohtsu

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We report on high resolution imaging by a collection-mode photon scanning tunneling microscope (c-mode PSTM). In our PSTM system, we have used a novel probe with a nanometric protrusion formed from a metal coated sharpened fiber. By using this probe, flagellar filaments of salmonella of diameter 25 nm could be imaged to have a full width at half maximum of 50 nm. Obtained images strongly depended on the separation of the sample to the probe, the diameter of the aperture, and polarization of the irradiated light. Comments on the origins of these dependencies are given.

Original languageEnglish
Pages (from-to)9-15
Number of pages7
JournalOptics Communications
Volume124
Issue number1-2
DOIs
Publication statusPublished - 1996 Feb 15
Externally publishedYes

Fingerprint

Microscopes
Photons
microscopes
Scanning
Imaging techniques
scanning
probes
photons
salmonella
Salmonella
Full width at half maximum
filaments
apertures
Metals
Polarization
fibers
Fibers
high resolution
polarization
metals

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Imaging of biological samples by a collection-mode photon scanning tunneling microscope with an apertured probe. / Naya, Masayuki; Mononobe, Shuji; Umamaheswari, Rajagopalan; Saiki, Tosiharu; Ohtsu, Motoichi.

In: Optics Communications, Vol. 124, No. 1-2, 15.02.1996, p. 9-15.

Research output: Contribution to journalArticle

Naya, Masayuki ; Mononobe, Shuji ; Umamaheswari, Rajagopalan ; Saiki, Tosiharu ; Ohtsu, Motoichi. / Imaging of biological samples by a collection-mode photon scanning tunneling microscope with an apertured probe. In: Optics Communications. 1996 ; Vol. 124, No. 1-2. pp. 9-15.
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