Photothermal heterodyne imaging of individual nonfluorescent nanoclusters and nanocrystals

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dc.creatorBerciaud, Stéphane
dc.creatorCognet, Laurent
dc.creatorBlab, Gerhard A
dc.creatorLounis, Brahim
dc.date2007-04-29
dc.date.accessioned2026-07-07T07:58:42Z
dc.date.available2026-07-07T07:58:42Z
dc.descriptionWe introduce a new, highly sensitive, and simple heterodyne optical method for imaging individual nonfluorescent nanoclusters and nanocrystals. A 2 order of magnitude improvement of the signal is achieved compared to previous methods. This allows for the unprecedented detection of individual small absorptive objects such as metallic clusters (of 67 atoms) or nonluminescent semiconductor nanocrystals. The measured signals are in agreement with a calculation based on the scattering field theory from a photothermal-induced modulated index of refraction profile around the nanoparticle.
dc.identifierhttps://arxiv.org/abs/0704.3857
dc.identifierhttp://arxiv.org/abs/0704.3857
dc.identifierPhysical review letters 93, 25 (17/12/2004) 257402
dc.identifierdoi:10.1103/PhysRevLett.93.257402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128104
dc.subjectOptics
dc.subjectOther Condensed Matter
dc.titlePhotothermal heterodyne imaging of individual nonfluorescent nanoclusters and nanocrystals
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