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Observation of intrinsic size effects in the optical response of individual gold nanoparticles
Stéphane Berciaud, Laurent Cognet, Philippe Tamarat +1
The Photothermal Heterodyne Imaging method is used to study for the first time the absorption spectra of individual gold nanoparticles with diameters down to 5 nm. Intrinsic size e…
Photothermal heterodyne imaging of individual nonfluorescent nanoclusters and nanocrystals
Stéphane Berciaud, Laurent Cognet, Gerhard A Blab +1
We introduce a new, highly sensitive, and simple heterodyne optical method for imaging individual nonfluorescent nanoclusters and nanocrystals. A 2 order of magnitude improvement o…
Photothermal Absorption Spectroscopy of Individual Semiconductor Nanocrystals
Stéphane Berciaud, Laurent Cognet, Brahim Lounis
Photothermal heterodyne detection is used to record the first room-temperature absorption spectra of single CdSe/ZnS semiconductor nanocrystals. These spectra are recorded in the h…
Single NanoParticle Photothermal Tracking (SNaPT) of 5 nm gold beads in live cells
David Lasne, Gerhard A. Blab, Stéphane Berciaud +5
Tracking individual nano-objets in live cells during arbitrary long times is an ubiquitous need in modern biology. We present here a method for tracking individual 5 nm gold nanopa…
Absorption spectroscopy of individual single-walled carbon nanotubes
Stéphane Berciaud, Laurent Cognet, Philippe Poulin +2
Current methods for producing single-walled carbon nanotubes (SWNTs) lead to heterogeneous samples containing mixtures of metallic and semiconducting species with a variety of leng…