Concept

Gradient-index optics

Related publications (103)

Simultaneous Cell Morphometry and Refractive Index Measurement with Dual-Wavelength Digital Holographic Microscopy

Pierre Magistretti, Christian Depeursinge, Tristan Colomb, Benjamin Rappaz, Pierre Marquet, Florian Charrière

The refractive index and cellular thickness information contained in the phase signal recorded by Digital Holographic Microscopy is measured independently with a dual-wavelength technique exploiting the dispersion of a dye present in the perfusion medium. ...

OSA2008

Simultaneous cell morphometry and refractive index measurement with dual- wavelength digital holographic microscopy and dye-enhanced dispersion of perfusion medium

Pierre Magistretti, Christian Depeursinge, Benjamin Rappaz, Pierre Marquet, Florian Charrière

Digital holographic microscopy (DHM) allows optical-path-difference (OPD) measurements with nanometric accuracy. OPD induced by transparent cells depends on both the refractive index (RI) of cells and their morphology. This Letter presents a dual-wavelengt ...

2008

Ultra-thick micro-optical components using the PRISM photosensitive flexopolymer

Martinus Gijs, Abdeljalil Sayah, Virendra Kumar Parashar, Venkataragavalu Sivagnanam

We present the photosensitive flexopolymer PRISM as a new promising material for the realization of thick optical components. The PRISM flexopolymer can be directly polymerized using conventional UV exposure and is simply developed in a water-based solutio ...

2007

Micro-optics for optical trapping in microfluidics - art. no. 66440P

René Salathé, Fabrice Merenda, Johann Rohner, Jean-Marc Fournier, Elodie Lamothe

Micro-optical compo nents offer several possibilities for creating large matrices of optical traps, either when working on inverted microscopes, or by directly integrating miniaturized optical components at the level of a micro-fluidic chip. In thisarticle ...

2007

Erythrocytes volume and refractive index measurement with a digital holographic microscope

Pierre Magistretti, Christian Depeursinge, Benjamin Rappaz, Pierre Marquet, Jonas Kühn, Florian Charrière

Digital holographic microscopy (DHM) is a technique that allows obtaining, from a single recorded hologram, quantitative phase image of living cell with interferometric accuracy. Specifically the optical phase shift induced by the specimen on the transmitt ...

SPIE2007

Nanostructured Coatings on Glazing for Active Solar Facades

Jean-Louis Scartezzini, Christian Roecker, Maria Cristina Munari Probst, Josef Andreas Schuler, Estelle De Chambrier, Dipanwita Dutta

Thin films on glazing play an important role in the design of solar energy conversion systems as thermal collectors or photovoltaic panels. Antireflective coatings based on porous silicon dioxide are well established in the field of solar collector glazing ...

EPFL2007

Sol-gel deposition and characterization of low refractive index nanocomposite Mg:F:Si:O thin films for solar and protective coatings

Jean-Louis Scartezzini, Christian Roecker, Josef Andreas Schuler, Estelle De Chambrier, Dipanwita Dutta

Coatings for thermal solar energy conversion have to be abrasion-resistant, stable at elevated temperatures, and often have to protect the substrate against corrosion. Due to the conditions of refractive index matching between the substrate and the ambient ...

2007

Refractive multiple optical tweezers for parallel biochemical analysis in micro-fluidics - art. no. 64830A

René Salathé, Horst Vogel, Fabrice Merenda, Johann Rohner, Jean-Marc Fournier

We present a multiple laser tweezers system based on refractive optics. The system produces an array of 100 optical traps thanks to a refractive microlens array, whose focal plane is imaged into the focal plane of a high-NA microscope objective. This refra ...

2007

Microcamera Embedded in a Wristwatch

Pierre-André Farine, Steve Tanner, Michael Ansorge, Patrick Stadelmann

The presentation reports upon the conception and realization of a miniature very low-power microcamera system that has been embedded in a wristwatch so as to enable the spontaneous capture of photographs in everyday life based on timekeeping devices the us ...

2007

Erythrocytes analysis with a Digital Holographic Microscope

Pierre Magistretti, Christian Depeursinge, Benjamin Rappaz, Pierre Marquet, Jonas Kühn, Florian Charrière

Digital holographic microscopy (DHM) is a technique that allows obtaining, from a single recorded hologram, quantitative phase image of living cell with interferometric accuracy (Marquet et al., 2005). Specifically the optical phase shift induced by the sp ...

SPIE2007

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