Regensburg 2013 – wissenschaftliches Programm

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MI: Fachverband Mikrosonden

MI 9: Poster: Microanalysis and Microscopy

MI 9.10: Poster

Mittwoch, 13. März 2013, 15:00–17:00, Poster B2

Three-dimensional Scanning Near-field Optical Microscopy with Single Color Centers — •Thomas Oeckinghaus, Julia Tisler, Rainer Stöhr, Roman Kolesov, Rolf Reuter, Friedemann Reinhard, and Jörg Wrachtrup — 3. physikalisches Institut, Universität Stuttgart

We are using single color centers as a light source for apertureless scanning near-field optical microscopy. Specifically, we use a nanodiamond of a size below 20 nm, containing only a single nitrogen-vacancy color center (NV), which we attach to the tip of an AFM.

This technique offers the opportunity to investigate near-field effects between the NV and another object that only occur at a range below a few nanometers. For example, we were able to map the fluorescence quenching of the NV caused by a graphene monolayer in all three dimensions.

Beside these result, I will present our implementation of a technique to acquire three-dimensional fluorescence images from a single tapping-mode AFM scan. [Mangum et al., Nano Letters, 2009, 9]