Publications de Pierre Joris | EPFL Graph Search

Microfluidic network device

Martinus Gijs, Pierre Joris, Ata Tuna Ciftlik, Diego Gabriel Dupouy

Microfluidic network device (2) configured to supply reagents to a biological tissue sampling device (1), comprising a plurality of microfluidic inlet channels (12) connected to respective sources of said reagents, at least one common outlet channel (22), ...

2017

Detection of Alzheimer’s disease amyloid-beta plaque deposition by deep brain impedance profiling

Philippe Renaud, Patrick Fraering, Pierre Joris, Sébastien Mosser, Amélie Barbara Hildegarde Béduer

OBJECTIVE: Alzheimer disease (AD) is the most common form of neurodegenerative disease in elderly people. Toxic brain amyloid-beta (ASS) aggregates and ensuing cell death are believed to play a central role in the pathogenesis of the disease. In this study ...

Iop Publishing Ltd2015

Accurate resistivity mouse brain mapping using microelectrode arrays

Philippe Renaud, Vincent Delattre, Patrick Fraering, Pierre Joris, Sébastien Mosser, Amélie Barbara Hildegarde Béduer

Electrical impedance spectroscopy measurements were performed in post-mortem mice brains using a flexible probe with an embedded micrometric electrode array. Combined with a peak resistance frequency method this allowed obtaining intrinsic resistivity valu ...

Elsevier2014

Microimpedance spectroscopy for local characterization of tissue structures

Pierre Joris

EPFL2014

A microfluidic-based frequency-multiplexing impedance sensor (FMIS)

Philippe Renaud, Arnaud Bertsch, Pierre Joris, Robert Meissner, Bilge Eker

We present a novel technology for the simultaneous and simple impedimetric screening of multiple microfluidic channels with only one electrode pair. We have exploited the frequency dimension to distinguish between up to three channels. Each ‘sub-sensor’ po ...

2012

Polyimide foam-like microstructures: technology and mechanical properties

Philippe Renaud, Martinus Gijs, Sébastien Jiguet, Pierre Joris, Jagoda Anna Dobrzynska

We report a process for the realization of polyimide films with custom-designed microporosity based on the heat-induced depolymerization of polyimide-embedded polypropylene carbonate microstructures. The foam-like microstructures are up to 40 µm thick and ...

Institute of Physics2011