Apertureless scanning near-field optical microscopy: the need for probe-vibration modeling
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Updated: Jul 31, 2026

Assembly, Tuning and Use of an Apertureless Near Field Infrared Microscope for Protein Imaging
Published on: November 25, 2009
Radouane Fikri1, Thomas Grosges, Dominique Barchiesi
1Laboratoire de Nanotechnologie et d'Instrumentation Optique--Centre National de la Recherche Scientifique Formation de Recherche en Evolution 2671, 12 Rue Marie Curie BP-2060, 10010 Troyes Cedex, France.
Abstract:
In apertureless scanning near-field optical microscopy (ASNOM), the probe vibration is often used to increase the detected signal. The useful signal is detected at the probe-vibration frequency by a lock-in amplifier. By comparing two-dimensional numerical results with an experimental scan, we show numerically that, to explain or predict the detected signal, a realistic model of ASNOM should take into account the scan of the probe as well as the probe vibration and the material properties.
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