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Proceedings Paper

Tip-sample distance control for near-field scanning optical microscopes
Author(s): Khalad Karrat; Robert D. Grober
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Paper Abstract

In a recent paper we have developed a new technique allowing to control the distance separation between a tapered metal coated optical fiber tip and the surface of a sample. This technique is based on a piezo-electric tuning fork as a shear force sensor and is found to be suitable for the operation of near-field scanning optical microscope. We present in this article a review of the recent results concerning this new technique. In particular, we present hydrodynamic measurements performed in order to evaluate the shear (or viscous drag) forces picked up by the piezo-electric tuning fork sensor.

Paper Details

Date Published: 6 September 1995
PDF: 13 pages
Proc. SPIE 2535, Near-Field Optics, (6 September 1995); doi: 10.1117/12.218690
Show Author Affiliations
Khalad Karrat, Technical Univ. of Munich (Germany)
Robert D. Grober, Yale Univ. (United States)

Published in SPIE Proceedings Vol. 2535:
Near-Field Optics
Michael A. Paesler; Patrick J. Moyer, Editor(s)

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