Volume 3, Issue 5-6 pp. 301-309
Research Paper

The Imaging of Small Domains of J-Aggregated Dye Molecules by Scanning Near-Field Optical Microscopy

Jörg Heimel

Jörg Heimel

Physikalisches Institut, Universität Muenster, Wilhelm Klemmstr. 10, 48149 Muenster

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Harald Fuchs

Harald Fuchs

Physikalisches Institut, Universität Muenster, Wilhelm Klemmstr. 10, 48149 Muenster

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Ulrich C. Fischer

Ulrich C. Fischer

Physikalisches Institut, Universität Muenster, Wilhelm Klemmstr. 10, 48149 Muenster

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Abstract

The concept of high resolution imaging of a sample on a metal substrate by scanning near field optical microscopy (SNOM) with the tetrahedral tip is used for imaging of domains of oriented dye molecules on a metal substrate at a resolution in the order of 10 nm. The metal substrate is important for obtaining a high resolution in the SNOM images and at the same time it is expected to provide a mechanism for an increased contrast in SNOM imaging by scanning probe enhanced elastic scattering of molecules in the gap between a metal tip and a metal surface.

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