Publications de Joan Teixidor | EPFL Graph Search

A neural probe to sample brain fluid in nanoliter volumes for quantitative molecular studies

Neural functions operate in tightly controlled conditions that are mediated by multiple electrical and chemical phenomena. Brain disorders such as Parkinson's Disease and Alzheimer's Disease perturb these conditions and cause a loss of neurons, which impai ...

EPFL2022

On-Demand Nanoliter Sampling Probe for the Collection of Brain Fluid

Philippe Renaud, Hilal Lashuel, Arnaud Bertsch, Laure Menin, Daniel Ortiz Trujillo, Joan Teixidor, Salvatore Novello

Continuous fluidic sampling systems allow collection of brain biomarkers in vivo. Here, we propose a new sequential and intermittent sampling paradigm using droplets, called Droplet on Demand (DoD). It is implemented in a microfabricated neural probe and a ...

AMER CHEMICAL SOC2022

In-flow electrochemical detection of chemicals in droplets with pyrolysed photoresist electrodes: application as a module for quantification of microsampled dopamine

Philippe Renaud, Arnaud Bertsch, Joan Teixidor, Albert René Yvon Leroy

The electrochemical quantification of analytes in droplets of PBS separated by a fluorinated phase was investigated. PDMS-fused silica chips with pyrolysed photoresist electrodes were prepared using a simple fabrication technique and used to analyze drople ...

ROYAL SOC CHEMISTRY2021

Soft metal constructs for large strain sensor membrane

Stéphanie Lacour, Hadrien Olivier Michaud, Joan Teixidor

Thin gold films on silicone display large reversible change in electrical resistance upon stretching. Eutectic liquid metal conductors maintain bulk metal conductivity, even upon extensive elongation. When integrated together, the soft metals enable multid ...

Iop Publishing Ltd2015

Soft flexion sensors integrating strechable metal conductors on a silicone substrate for smart glove applications

Stéphanie Lacour, Hadrien Olivier Michaud, Joan Teixidor

We design and implement a sensory skin that monitors in real time finger flexure (three sensors per finger) of a user's hand. Compared to current technologies, the electronic skin is made entirely of stretchable materials integrating silicone rubber, low r ...

IEEE2015

Programming and use of Parylene C fluorescence as a quantitative on-chip reference

Martinus Gijs, Ata Tuna Ciftlik, Diego Gabriel Dupouy, Joan Teixidor

A large number of lab-on-a-chip applications use fluorescence for quantifying biological entities. In such applications, incorporation of a stable on-chip fluorescent reference source would be highly desirable in order to compensate for instrumental parame ...

Royal Soc Chemistry2014