Fluorescent oxide nanoparticles adapted to active tips for near-field optics

Details Fluorescent oxide nanoparticles adapted to active tips for near-field optics Fluorescent oxide nanoparticles adapted to active tips for near-field optics

2008-07-23

arxiv.org/abs/0807.3634v2

Nanotechnology 20, 015603 (2009)

Physics

Condensed Matter

Materials Science

Changes made following Referee's comments; added references; one added figure. See story on this article at: http://nanotech

Scientific paper

10.1088/0957-4484/20/1/015603

We present a new kind of fluorescent oxide nanoparticles with properties well suited to active-tip based near-field optics. These particles with an average diameter in the range 5-10 nm are produced by Low Energy Cluster Beam Deposition (LECBD) from a YAG:Ce3+ target. They are studied by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), classical photoluminescence, cathodoluminescence and near-field scanning optical microscopy (NSOM). Particles of extreme photo-stability as small as 10 nm in size are observed. These emitters are validated as building blocks of active NSOM tips by coating a standard optical tip with a 10 nm thick layer of YAG:Ce3+ particles directly in the LECBD reactor and by subsequently performing NSOM imaging of test surfaces.

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