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PubMed · 17090100

Differential near-field scanning optical microscopy.

Aydogan Ozcan·Ertugrul Cubukcu·Alberto Bilenca·Kenneth B Crozier·Brett E Bouma·Federico Capasso·Guillermo J Tearney
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Abstract

We theoretically and experimentally illustrate a new apertured near-field scanning optical microscopy (NSOM) technique, termed differential NSOM (DNSOM). It involves scanning a relatively large (e.g., 0.3-2 mum wide) rectangular aperture (or a detector) in the near-field of an object and recording detected power as a function of the scanning position. The image reconstruction is achieved by taking a two-dimensional derivative of the recorded power map. Unlike conventional apertured NSOM, the size of the rectangular aperture/detector does not determine the resolution in DNSOM; instead, the resolution is practically determined by the sharpness of the corners of the rectangular aperture/detector. Principles of DNSOM can also be extended to other aperture/detector geometries such as triangles and parallelograms.

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Equipment DesignEquipment Failure AnalysisMicroscopy, Scanning ProbeNanotechnologyParticle SizeSensitivity and SpecificitySurface PropertiesJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, Non-P.H.S.

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Aydogan Ozcan, Ertugrul Cubukcu, Alberto Bilenca, Kenneth B Crozier, Brett E Bouma, Federico Capasso, Guillermo J Tearney. 2006. Differential near-field scanning optical microscopy.. https://doi.org/10.1021/nl062110v

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