CdSe-single-nanoparticle based active tips for near-field optical microscopy

Details CdSe-single-nanoparticle based active tips for near-field optical microscopy CdSe-single-nanoparticle based active tips for near-field optical microscopy

2006-12-21

arxiv.org/abs/physics/0612208v1

Nanotechnology 16, 613 (2005)

Physics

Optics

Scientific paper

10.1088/0957-4484/16/4/047

We present a method to realize active optical tips for use in near-field optics that can operate at room temperature. A metal-coated optical tip is covered with a thin polymer layer stained with CdSe nanocrystals or nanorods at low density. The time analysis of the emission rate and emission spectra of the active tips reveal that a very small number of particles - possibly down to only one - can be made active at the tip apex. This opens the way to near-field optics with a single inorganic nanoparticle as a light source.

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