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7 papers · 2 filters
Structure-Dependent Fluorescence Efficiencies of Individual Single-Walled Carbon Nanotubes
Dmitri A. Tsyboulski, John-David R. Rocha, Sergei M. Bachilo +2
Single-nanotube photometry was used to measure the product of absorption cross-section and fluorescence quantum yield for 12 (n,m) structural species of semiconducting SWNTs in aqu…
Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single Molecule Reactions
Laurent Cognet, Dmitri A. Tsyboulski, John-David R. Rocha +3
Single-molecule chemical reactions with individual single-walled carbon nanotubes were observed through near-infrared photoluminescence microscopy. The emission intensity within di…
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…
Direct imaging of lateral movements of AMPA receptors inside synapses
Catherine Tardin, Laurent Cognet, Cécile Bats +2
Trafficking of AMPA receptors in and out of synapses is crucial for synaptic plasticity. Previous studies have focused on the role of endo/exocytosis processes or that of lateral d…
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…
Multiple Routes for Glutamate Receptor Trafficking: Surface Diffusion and Membrane Traffic Cooperate to Bring Receptors to Synapses
Laurent Cognet, Laurent Groc, Brahim Lounis +1
Trafficking of glutamate receptors into and out of synapses is critically involved in the plasticity of excitatory synaptic transmission. Endocytosis and exocytosis of receptors ha…