Recherche

Afficher tous les résultats pour

Accueil

Personne

Arnaud Bertsch

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (94)

Neural probe combining microelectrodes and a droplet-based microdialysis collection system for high temporal resolution sampling

Philippe Renaud, Arnaud Bertsch, Guillaume Cédric Yves Petitpierre

We propose a novel neural probe which combines microfluidic channels with recording and stimulation electrodes. The developed microfabrication approach enables the concentration of every active element such as electrodes and the sampling inlet in close pro ...

Royal Society of Chemistry2016

Fabrication of nanoporous membranes through silicon templates : two different approaches

Philippe Renaud, Arnaud Bertsch, Stefano Silvio Giovanni Varricchio, Niccolo Piacentini

We present here a novel approach to fabricate nanoporous membranes based on the use of sacrificial template structures to individually define pore parameters such as geometry, shape, and placement. Based on this rationale two different nano-fabrication met ...

2016

Thermal gate, a new tool for ionic transport control inside nanochannels

Philippe Renaud, Arnaud Bertsch, Mojtaba Taghipoor

Transport of ionic species solvated in electrolytes depends on temperature. This dependence is much stronger in nanofluidics than large scale since the surface charge also varies with temperature. In this work, we introduce a new tool for the modulation of ...

IEEE2015

An improved model for predicting electrical conductance in nanochannels

Philippe Renaud, Arnaud Bertsch, Mojtaba Taghipoor

Nanochannel conductance measurements are commonly performed to characterize nanofluidic devices Theoretical analysis and experimental investigations imply that the nanochannel conductance does not follow the macro-scale models. It is generally accepted tha ...

2015

A Simple and Reliable PDMS and SU-8 Irreversible Bonding Method and Its Application on a Microfluidic-MEA Device for Neuroscience Research

Marc Olivier Heuschkel, Philippe Renaud, Arnaud Bertsch, Patrick Fraering, Yufei Ren, Sébastien Mosser, Shun-Ho Huang, Jingjing Chen

Polydimethylsiloxane (PDMS) and SU-8 are currently two very commonly used polymeric materials in the microfluidics field for biological applications. However; there is a pressing need to find a simple, reliable, irreversible bonding method between these tw ...

MDPI2015

On-chip synthesis of fine-tuned bone-seeking hybrid nanoparticles

Philippe Renaud, Arnaud Bertsch, Morteza Mahmoudi, Mohammad Mahdi Hasani-Sadrabadi

Aims: Here we report a one-step approach for reproducible synthesis of finely tuned targeting multifunctional hybrid nanoparticles (HNPs). Materials & methods: A microfluidic-assisted method was employed for controlled nanoprecipitation of bisphosphonate-c ...

Future Medicine Ltd2015

Special Issue: 15 Years of SU8 as MEMS Material

Philippe Renaud, Arnaud Bertsch

MDPI2015

Thermal control of ionic transport and fluid flow in nanofluidic channels

Philippe Renaud, Arnaud Bertsch, Mojtaba Taghipoor

In this work, we report a nanofluidic gating mechanism that uses the thermal effect for modulating the ionic transport inside nanofluidic channels. The control of the ionic transport inside a nanochannel is demonstrated using electrical conductivity. A the ...

2015

Temperature Sensitivity of Nanochannel Electrical Conductance

Philippe Renaud, Arnaud Bertsch, Mojtaba Taghipoor

Electrical measurement is a widely used technique for the characterization of nanofluidic devices. The electrical conductivity of electrolytes is known to be dependent on temperature. However, the similarity of the temperature sensitivity of the electrical ...

Amer Chemical Soc2015

On-Chip Fabrication of Paclitaxel-Loaded Chitosan Nanoparticles for Cancer Therapeutics

Philippe Renaud, Arnaud Bertsch, Fatemeh Sadat Majedi, Mohammad Mahdi Hasani-Sadrabadi, Shahin Bonakdar, Jules John Vandersarl

The use of solvent-free microfluidics to fine-tune the physical and chemical properties of chitosan nanoparticles for drug delivery is demonstrated. Nanoparticle self-assembly is driven by pH changes in a water environment, which increases biocompatibility ...

Wiley-Blackwell2014

Smart instrumentation for determination of ligament stiffness and ligament balance in total knee arthroplasty

Kamiar Aminian, Philippe Renaud, Arnaud Bertsch, Brigitte Jolles-Haeberli, Arash Arami, Willyan Hasenkamp Carreira

Ligament balance is an important and subjective task performed during total knee arthroplasty (TKA) procedure. For this reason, it is desirable to develop instruments to quantitatively assess the soft-tissue balance since excessive imbalance can accelerate ...

Elsevier Sci Ltd2014

Enclosed Electronic System for Force Measurements in Knee Implants

Kamiar Aminian, Philippe Renaud, Arnaud Bertsch, Peter Ryser, Eric Meurville, David Forchelet, Arash Arami, Matteo Simoncini

Total knee arthroplasty is a widely performed surgical technique. Soft tissue force balancing during the operation relies strongly on the experience of the surgeon in equilibrating tension in the collateral ligaments. Little information on the forces in th ...

Mdpi Ag2014

Design and test of a MEMS strain-sensing device for monitoring artificial knee implants

Kamiar Aminian, Alexandre Terrier, Philippe Renaud, Arnaud Bertsch, Arash Arami, Willyan Hasenkamp Carreira

This paper describes the development of a polyimide-based MEMS strain-sensing device. Finite element analysis was used to investigate an artificial knee implant and assist on device design and to optimize sensing characteristics. The sensing element of the ...

Springer2013

Nafion/chitosan-wrapped CNT nanocomposite membrane for high-performance direct methanol fuel cells

Philippe Renaud, Arnaud Bertsch, Songmei Wu, Fatemeh Sadat Majedi, Mohammad Mahdi Hasani-Sadrabadi

Here we show that the transport properties and electrochemical performance of polyelectrolyte membranes are improved through the dispersion of chitosan-wrapped carbon nanotubes, for direct methanol fuel cell applications. Methanol permeability is reduced v ...

Royal Soc Chemistry2013

A microfluidic approach to synthesizing high-performance microfibers with tunable anhydrous proton conductivity

Philippe Renaud, Arnaud Bertsch, Fatemeh Sadat Majedi, Mohammad Mahdi Hasani-Sadrabadi, Jules John Vandersarl

Here, we demonstrate a new approach for the synthesis of ion exchange microfibers with finely tuned anhydrous conductivity. This work presents microfluidics as a system to control the size and phosphoric acid (PA) doping level of the polybenzimidazole (PBI ...

Royal Society of Chemistry2013

Al2O3/W hetero-structured nanopore membranes: From native to tunable nanofluidic diodes

Philippe Renaud, Arnaud Bertsch, Jürgen Brugger, Fabien Patrick Wildhaber, Songmei Wu

We present here Al2O3/W hetero-structured nanopore membranes which function as native and electrical field tunable nanofluidic diodes. A typical membrane is 100×100 μm2 in size with pore density of ∼ 20/μm2. The nanopores are 26 nm in diameter and 400 nm i ...

IEEE2013

Label-Free Recognition of Drug Resistance via Impedimetric Screening of Breast Cancer Cells

Philippe Renaud, Arnaud Bertsch, Robert Meissner, Bilge Eker

We present a novel study on label-free recognition and distinction of drug resistant breast cancer cells (MCF-7 DOX) from their parental cells (MCF-7 WT) via impedimetric measurements. Drug resistant cells exhibited significant differences in their dielect ...

Public Library of Science2013

Instrumented Knee Prosthesis for Force and Kinematics Measurements

Steve Tanner, Kamiar Aminian, Philippe Renaud, Catherine Dehollain, Arnaud Bertsch, Peter Ryser, Eric Meurville, Pierre-André Farine, Oguz Atasoy, Brigitte Jolles-Haeberli, Arash Arami, Willyan Hasenkamp Carreira, Shafqat Ali, Matteo Simoncini

In this work, we present the general concept of an instrumented smart knee prosthesis for in-vivo measurement of forces and kinematics. This system can be used for early monitoring of the patient after implantation and prevent possible damage to the prosth ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Field effect modulated nanofluidic diode membrane based on Al2O3/W heterogeneous nanopore arrays

Philippe Renaud, Arnaud Bertsch, Jürgen Brugger, Fabien Patrick Wildhaber, Songmei Wu

We developed Al2O3/W heterogeneous nanopore arrays for field effect modulated nanofluidic diodes. They are fabricated by transferring self-organized nanopores of anodic aluminium oxide into a W thin film. The nanopores are ∼20 nm in diameter and 400 nm in ...

American Institute of Physics2013

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

Page 3 sur 5