Concept

Rétroéclairage

Publications associées (51)

An LCD tachistoscope with submillisecond precision

Tachistoscopes allow brief visual stimulation delivery, which is crucial for experiments in which subliminal presentation is required. Up to now, tachistoscopes have had shortcomings with respect to timing accuracy, reliability, and flexibility of use. Her ...

2013

An LCD Tachistoscope With Sub-Millisecond Precision

Michael Herzog, Marc Repnow

Tachistoscopes allow brief visual stimulation delivery, crucial for experiments where subliminal presentation is required. Up to now, tachistoscopes have shortcomings regarding timing accuracy, reliability, and flexibility of use. Here, we present a new an ...

2013

Cavity Quantum Electrodynamics with Site-Controlled Pyramidal Quantum Dots in Photonic Crystal Cavities

Milan Calic

Cavity quantum electrodynamics encompasses the study and control of the interactions between quantum light sources and resonant modes of optical cavities. The subject of this thesis is cavity quantum electrodynamics with semiconductor quantum dots (QDs), w ...

EPFL2013

Synthesis of authenticable halftone images with non-luminescent halftones illuminated by a luminescent emissive layer

Roger Hersch, Julien Alexandre Andres

A method and computing system are proposed for producing an authenticable security device with two sides. The verso side is covered with a luminescent emissive variable intensity layer formed for example by invisible luminescent ink halftones and the recto ...

2012

From Luminescent Lanthanide Complexes to Color Reproduction and Optical Document Security with Invisible Luminescent Inks

Julien Alexandre Andres

The present thesis deals with luminescent compounds based on lanthanide complexes that are suitable for color reproduction and optical document security with invisible luminescent inks. This thesis is divided in two distinct fields: chemistry, which produc ...

EPFL2012

Intensity of Light Incident and Photoperiod of LED illumination based system on Scenedesmus vacuolatus growth

Christof Holliger, Christian Ludwig, Jean-Paul Schwitzguebel, Mariluz Bagnoud, Olivier Laurent Emery

The proposal of SunCHem project is to produce methane from the hydrothermal liquefaction of microalgal biomass and recovery high-value products in a bio-refinery concept. In this sense the Environmental Biotechnology Laboratory of EPFL (LBE) has developing ...

2012

High-brightness polarized light-emitting diodes

Elison de Nazareth Matioli

Light-emitting diodes are becoming the alternative for future general lighting applications, with huge energy savings compared to conventional light sources owing to their high efficiency and reliability. Polarized light sources would largely enhance the e ...

Nature Publishing Group2012

Bound and anti-bound biexciton in site-controlled pyramidal GaInAs/GaAs quantum dots

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Clément William Tendaï Jarlov, Milan Calic

We present a detailed study of biexciton complexes formed in single, site-controlled pyramidal GaInAs/GaAs quantum dots (QDs). By using power dependent measurements and photon correlation spectroscopy, we identify the excitonic transitions of a large numbe ...

American Institute of Physics2012

Nanocomposites based on highly luminescent nanocrystals and semiconducting conjugated polymer for inkjet printing

Jürgen Brugger, Kristopher Pataky

In this work nanocomposites based on organic-capped semiconductor nanocrystals formed of a core of CdSe coated with a shell of ZnS (CdSe@ZnS), with different sizes, and a semiconducting conjugated polymer, namely poly[(9,9-dihexylfluoren-2,7-diyl)-alt-(2,5 ...

Institute of Physics2012

Sorted Sector Covering Combined with Image Condensation - An Efficient Method for Local Dimming of Direct-Lit and Edge-Lit LCDs

We consider the backlight calculation of local dimming as an optimization problem. The luminance produced by many LEDs at each pixel considered is calculated which should cover the gray value of each pixel. while the sum of LED currents is to be minimized. ...

2010

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