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Energy Transfer, Nanometer Crystals and Opfical Nano-probes

Published online by Cambridge University Press:  15 February 2011

Weihong Tan  and
Kopelman Kopelnan
Weihong Tan
Affiliation:
Department of Chemistry, The University of Michigan Ann Arbor, Michigan 48109
Kopelman Kopelnan
Affiliation:
Department of Chemistry, The University of Michigan Ann Arbor, Michigan 48109
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Abstract

Nanometer light and exciton sources and probes have been prepared by adding various inorganic and organic crystals and molecularly doped polymers to micropipettes and nanofabricated optical fiber tips. Specifically, a new nanotechnology, near-field photonanofabrication, has been developed, leading to a thousandfold miniaturization of immobilized Fiber Optical Chemical Sensors and to a billionfold decrease in necessary sample volume. The response time has also been shortened by a factor of at least 100. Applications of these subwavelength probes include biological single cell analysis, supertip development, Förster-energy transfer and Kasha quenching phenomena at the interface between the positionally controlled nanocrystal tip and its photoactive environment. Practically, this leads to enhanced sensitivity of optical probes, nano-optical chemical sensors and near-field exciton light sources.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 290: Symposium N – Dynamics in Small Confining Systems , 1992 , 287
Copyright
Copyright © Materials Research Society 1993

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