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Journal of Biomedical Optics

Scanning near-field optical microscopy with a tetrahedral tip at a resolution of 6 nm
Author(s): J. Koglin; Uwe Fischer; Harald Fuchs
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Paper Abstract

Using a tetrahedral tip as a probe, it is possible to combine the techniques of scanning tunneling microscopy (STM) and scanning near-field optical microscopy (SNOM) in the same probe tip so that the probing of the respective near-field interactions occurs virtually at the same spot of the tip. Atomic resolution on pyrolytic graphite and stable images on rough samples are routinely obtained in the STM mode. In the combined SNOM/STM mode, an absorption contrast in the optical image is obtained with images of evaporated silver films on glass as well as of silver deposited on an indium tin oxide substrate. We obtained a point-to-point resolution of 6 nm, whereas the edge resolution is about 1 nm.

Paper Details

Date Published: 2 January 1996
PDF: 4 pages
J. Biomed. Opt. 1(1) doi: 10.1117/12.227700
Published in: Journal of Biomedical Optics Volume 1, Issue 1
Show Author Affiliations
J. Koglin, Westfalische Wilhelms-Univ. (Germany)
Uwe Fischer, Technische Univ. Berlin (Germany)
Harald Fuchs, Westfalische Wilhelms-Univ. (Germany)


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