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Error signal artifact in apertureless scanning near-field optical microscopy

Laurent Billot 1 Marc Lamy de la Chapelle 1 Dominique Barchiesi 1 S.-H. Chang 2 S. Gray 2 J. Rogers 3 A. Bouhelier 2 Pierre-Michel Adam 1 Jean-Louis Bijeon 1 Gary P. Wiederrecht 2 Renaud Bachelot 1 Pascal Royer 1
1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
ICD - Institut Charles Delaunay
2 University of Illinois at Urbana-Champaign [Urbana]
3 ANL - Argonne National Laboratory [Lemont]
Abstract : Apertureless scanning near-field optical microscopy is a method for obtaining subwavelength optical images of nanostructures. However, great care must be taken to avoid artifactual images. We report on one artifact related to the error signal in cantilever vibration amplitude when operating in tapping mode atomic force microscopy. The artifact is described experimentally and modeled by electromagnetic calculations based on the finite element method. We report specific steps to identify and avoid this artifact with experimental results on gold nanostructures. It is suggested that future apertureless scanning near-field optical microscopy studies verify that optical image does not correlate with error signal.
Keywords : Optical imaging Atomic force microscopy Laser materials Finite-element analysis Transition metals Scanning probe microscopy Chemical elements Lasers Plasmonics Nano optics
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https://hal-utt.archives-ouvertes.fr/hal-02318693
Contributor : Daniel Gavrysiak Connect in order to contact the contributor
Submitted on : Thursday, October 17, 2019 - 12:40:10 PM
Last modification on : Wednesday, October 20, 2021 - 2:41:11 PM

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Laurent Billot, Marc Lamy de la Chapelle, Dominique Barchiesi, S.-H. Chang, S. Gray, et al.. Error signal artifact in apertureless scanning near-field optical microscopy. Applied Physics Letters, American Institute of Physics, 2006, 89 (2), pp.023105. ⟨10.1063/1.2219134⟩. ⟨hal-02318693⟩

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