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All-optical switching in an optofluidic polydimethylsiloxane: Liquid crystal grating defined by cast-molding

Publications associées (32)

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Optofluidic Microstructures Containing Liquid Crystals

Andreas Vasdekis, Luciano De Sio, Marilisa Romito

We report our recent efforts on the realization and characterization of a conductive polydimethylsiloxane (PDMS) microstructure containing liquid crystals (LC). The sample has been realized by means of a layer by layer strategy. An indium tin oxide (ITO) l ...

Taylor & Francis Ltd2013

All-optical polariton transistor

Romuald Houdré

Although optical technology provides the best solution for the transmission of information, all-optical devices must satisfy several qualitative criteria to be used as logic elements. In particular, cascadability is difficult to obtain in optical systems, ...

Nature Publishing Group2013

Low-Pressure Chemical Vapor Deposited Zinc Oxide Films

Laura Ding

Polycrystalline zinc oxide (ZnO) films, prepared by low-pressure chemical vapor deposition are investigated in this thesis. ZnO belongs to the class of transparent conductive oxide materials, as it is transparent to light from the visible to the near-infra ...

EPFL2013

Near-field imaging

Libo Yu

Bloch surface waves (BSWs) are surface electromagnetic waves excited at the interface between a truncated periodic dielectric multilayer and a surrounding medium. This particular solution to the Maxwell equations in stratified media has been known since th ...

EPFL2013

Electro-switchable polydimethylsiloxane-based optofluidics

Andreas Vasdekis, Luciano De Sio, Marilisa Romito

We report on the fabrication and characterization of a new generation of electro-switchable optofluidic devices based on flexible substrates, combined with the extraordinary properties of reconfigurable soft-materials. A conductive polydimethylsiloxane mic ...

Royal Soc Chemistry2012

Development of Tunable Optical MEMS for Advanced Laser Beam Shaping, Homogenizing and Speckle Reduction

Jonathan Masson

In this thesis, the development, design, fabrication and characterization of three innovative laser beam shaping, homogenizing and speckle reduction devices are reported. Typical beam shaping devices are static and not easily adaptable to a large variety o ...

EPFL2012

Silicon oxide deposition for enhanced optical switching in polydimethylsiloxane-liquid crystal hybrids

Demetri Psaltis, Andreas Vasdekis, Julien Cuennet, Luciano De Sio

We report an optical switch based on a diffraction grating by combining PDMS microstructures with a photo-responsive Nematic Liquid Crystal (NLC). The grating was realized via replica molding and was subsequently coated with a thin SiO layer. SiO induced a ...

2011

Switchable photonic crystal cavity by liquid crystal infiltration

Hans Peter Herzig, Toralf Scharf, Vincent Paeder, Pierre-Yves Baroni, Qing Tan, Armando Cosentino

We report on the fabrication and optical characterization of a switchable photonic crystal nanocavity actuated by liquid crystals. This device acts as a filter presenting a transmission peak around the telecom wavelength λ = 1550 nm. Passing from the isotr ...

European Optical Society2010

Couches minces nanoporeuses pour la réalisation de dispositifs optiques

Gaëtan Wicht

The physical-chemical properties of polymer films can be modified by embedding inorganic materials (e. g. inorganic nanoparticles) into the polymer matrix. Depending both on the material properties (e. g. nanoparticles concentration) and on the fabrication ...

EPFL2010

Optical Transmission Through Sub-Wavelength Slits in Metals

This thesis explores the properties of the transmission of light through subwavelength slits in metal films. Theoretical and experimental studies on the transmission through slits in metals are presented. In addition, the potential use of these slits for d ...

EPFL2010