Publications de René Salathé

X-ray imaging detector for radiological applications adapted to the context and requirements of low- and middle-income countries

Jean-Philippe Thiran, Klaus Benedikt Schönenberger, René Salathé, Mario Andres Chavarria Varon, Sébastien Emmanuel Blanc, Jérôme Schmid, Hubert Blanchard, Romain Sahli, Matthias Hüser

This paper describes the development of a novel medical x-ray imaging system adapted to the needs and constraints of low- and middle-income countries. The developed system is based on an indirect conversion chain: a scintillator plate produces visible ligh ...

2022

X-ray imaging detector for radiological applications in the harsh environments of low-income countries

Jean-Philippe Thiran, René Salathé, Klaus Benedikt Schönenberger, Mario Andres Chavarria Varon

This paper describes the development of a novel medical X-ray imaging system adapted to the needs and constraints of low and middle-income countries. The developed system is based on an indirect conversion chain: a scintillator plate produces visible light ...

2020

Crossed fiber optic Bessel beams for curvilinear optofluidic transport of dielectric particles

René Salathé, Fabrice Merenda, Kyunghwan Oh

Due to its unique non-diffracting and self-reconstructing nature, Bessel beams have been successfully adopted to trap multiple particles along the beam's axial direction. However, prior bulk-optic based Bessel beams have a fundamental form-factor limitatio ...

Optical Soc Amer2013

Microfluidic array cytometer based on refractive optical tweezers for parallel trapping, imaging and sorting of individual cells

René Salathé, Horst Vogel, Fabrice Merenda, Joachim Piguet, Michael Werner

Analysis of genetic and functional variability in populations of living cells requires experimental techniques capable of monitoring cellular processes such as cell signaling of many single cells in parallel while offering the possibility to sort interesti ...

Royal Society of Chemistry2011

Individual particle handling in a microfluidic system based on parallel laser trapping

René Salathé, Michael Werner, Horst Vogel, Bastien Rachet, Peter Ryser, Mathieu Grossenbacher

We present an optical trapping system combining individually addressable multiple laser traps with fluorescence spectroscopy. An in-line set of 64 near-IR laser diodes is used to create a line of individually addressable traps inside a microfluidic chip. T ...

Optical Society of America2011

High-resolution microscopy and photolithography devices using focusing micromirrors

René Salathé, Bastien Rachet, Fabrice Merenda

The invention relates to large-field high-resolution microscopy and photolithography setups operating with polychromatic light. It includes the use of a plurality of focusing micromirrors. ...

2010

Influence of Humidity and Temperature on Polymer Optical Fiber Bragg Gratings

Hans Georg Limberger, René Salathé, Nico Gérard Harbach

Water sorption of 100% changes the POFBG peak wavelength by 8.1 nm (at 1.54 micrometer). The temperature sensitivity depends on water content and is -10, -34, and -138 pm/K in dry, wet, and ambient conditions. ...

2010

Three-dimensional force measurements in optical tweezers formed with high-NA micromirrors

László Forró, René Salathé, Fabrice Merenda, Sylvia Jeney, Mathieu Grossenbacher

The three-dimensional trap stiffness of optical tweezers formed with high-NA micromirrors is investigated by back-focal-plane interferometry and power spectrum analysis. Normalized stiffness values of kappa(xy)/P-trap =1.2(mu N/m)/mW and kappa(z)/P-trap = ...

Optical Society of America2009

Miniaturized optical tweezers based on high-na micro-mirrors

René Salathé, Fabrice Merenda, Johann Rohner

The invention relates to an optical tweezer device including at least one light source (2) and one three-dimensional optical trap (9,10), said optical trap comprising one focusing micro-mirror (7) which is adapted to reflect and focus at least a portion of ...

2009

Experimental investigation of the effect of the mould thermal expansion on the development of internal stresses during carbon fibre composite processing

René Salathé, Véronique Michaud, Sébastien Lavanchy, Rodrigue Chatton

The influence of the mould material on the build-up of internal stresses during autoclave cure of carbon fibre composites was investigated using embedded optical fibre Bragg gratings. Unidirectional and cross-ply laminates were cured on four flat moulds: a ...

2008