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Cloaked Near-field Scanning Optical Microscope Tip for Noninvasive Near-field Imaging

Overview
Journal Phys Rev Lett
Specialty Biophysics
Date 2011 Jan 15
PMID 21231668
Citations 9
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Abstract

Near-field imaging is a well-established technique in biomedical measurements, since closer to the detail of interest it is possible to resolve subwavelength details otherwise unresolved by regular lenses. A near-field scanning optical microscope (NSOM) tip may indeed overcome the resolution limits of far-field optics, but its proximity inherently perturbs the measurement. Here, we apply the recent concept of a "cloaked sensor" to an NSOM device in collection mode, showing theoretically how a proper plasmonic cover applied to an NSOM tip may drastically improve its overall measurement capabilities.

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