Concept

Luminescence optiquement stimulée

Publications associées (21)

Luminescent latex particles loaded with anionic lanthanide complexes: a versatile platform for multicolour optical coding

Luminescent polymer latexes loaded with lanthanide complexes have been synthesized by miniemulsion polymerization. A self-assembled europium complex was embedded into poly(methyl methacrylate) nanoparticles without covalent linking and compared to a commer ...

2013

Targeted optogenetic stimulation to study the computational properties in neuronal ensembles recorded by multi-electrode devices

Diego Ghezzi

Micro-electrode array (MEA) technology has been exploited as a powerful tool for providing distributed information on learning, memory and information processing in cultured neuronal tissue, enabling an experimental perspective from the single cell level u ...

2010

Exciton localization on basal stacking faults in a-plane epitaxial lateral overgrown GaN grown by hydride vapor phase epitaxy

Nicolas Grandjean, Benoît Marie Joseph Deveaud, Jacques Levrat, Jean-Daniel Ganière, Denis Martin, Pierre Michel Corfdir, Tiankai Zhu, Jelena Ristic

We present a detailed study of the luminescence at 3.42 eV usually observed in a-plane epitaxial lateral overgrowth (ELO) GaN grown by hydride vapor phase epitaxy on r-plane sapphire. This band is related to radiative recombination of excitons in a commonl ...

American Institute of Physics2009

A Micro-Electrode Array device coupled to a laser-based system for the local stimulation of neurons by optical release of glutamate

Diego Ghezzi

Optical stimulation is a promising approach to investigate the local dynamic responses of cultured neurons. In particular, flash photolysis of caged compounds offers the advantage of allowing the rapid change of concentration of either extracellular or int ...

Elsevier2008

Nanowire assembly, e.g. for optical probes, comprises optically trapping high aspect ratio semiconductor nanowire with infrared single-beam optical trap and attaching nanowire to organic or inorganic structure

Aleksandra Radenovic

NOVELTY - A nanowire assembly method comprises optically trapping a semiconductor nanowire with an infrared single-beam optical trap and attaching the nanowire to an organic or inorganic structure by laser fusing. The nanowire is further trapped in a fluid ...

2007

Collision-induced luminescence from the impact of ions and cluster ions on solid rare gases

Wolfgang Harbich, Christoph Sieber

Light emission during the collision of ions and cluster ions on a metal surface covered by rare gas matrices of variable thickness is reported. The light intensity as a function of distance from the metal surface follows the classical image dipole theory. ...

2006

Determination of the exciton formation in quantum wells from time-resolved interband luminescence

Benoît Marie Joseph Deveaud, François Morier-Genoud, Marcia Portella Oberli, Jean Berney, Lars Kappei

We present the results of a detailed time-resolved luminescence study carried out on a very high quality InGaAs quantum well sample where the contributions at the energy of the exciton and at the band edge can be clearly separated. We perform this experime ...

American Physical Society2004

Time resolved photoluminescence from a semiconductor microcavity - Temperature dependence and role of leaky modes.

Vincenzo Savona, Paolo Schwendimann

Time resolved photoluminescence in semiconductor microcavities in the strong coupling regime both for non-resonant and resonant excitation is modeled by considering scattering of exciton polaritons by acoustic phonons. Rise time and decay time of the lumin ...

KLUWER ACADEMIC PUBL, 101 PHILIP DRIVE, NORWELL, MA 020611996

Effect of the scattering by phonons on the temperature dependence of the free QW exciton radiative lifetimes.

Vincenzo Savona, Paolo Schwendimann

We calculate scattering rates of QW excitons by acoustic phonons using realistic deformation potentials for electrons and holes in structures based on GaAs. We use these rates in order to reproduce the exciton dynamics in a time-resolved photoluminescence ...

1995

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