Field enhancement and apertureless near‐field optical spectroscopy of single molecules

We report on fluorescence enhancement in near field optical spectroscopy by apertureless microscopy. Our apertureless microscope is designed around a confocal fluorescence microscope associated with an AFM head. First, we show that the confocal microscope alone allows single molecule imaging and sin...

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Bibliographic Details
Published inJournal of microscopy (Oxford) Vol. 194; no. 2‐3; pp. 486 - 490
Main Authors Azoulay, J., Débarre, A., Richard, A., Tchénio, P.
Format Journal Article
LanguageEnglish
Published Oxford, U.K. and Cambridge, USA Blackwell Science Ltd 01.05.1999
Subjects
Apertureless SNOM
single molecule spectroscopy
SNOM
tip field‐enhancement
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Summary:We report on fluorescence enhancement in near field optical spectroscopy by apertureless microscopy. Our apertureless microscope is designed around a confocal fluorescence microscope associated with an AFM head. First, we show that the confocal microscope alone allows single molecule imaging and single molecule fluorescence analysis. When associated with the AFM head, we demonstrate, for the first time to our knowledge, that single molecule fluorescence is enhanced under the silicon tip. We tentatively attribute this effect to field enhancement under the tip.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0022-2720
1365-2818
DOI:10.1046/j.1365-2818.1999.00558.x