Arnaud Bertsch

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Publications associées (94)

LIQUID-IN-A-MEMS: ENCAPSULATION OF LIQUID IN A MICROCAPSULE BY INKJET PRINTING

Jürgen Brugger, Arnaud Bertsch, Jongeon Park

In this work we demonstrate a new process for precisely encapsulating nanoliters of aqueous solution in a microcapsule. Microcapsules were fabricated by twophoton polymerization and subsequently filled and sealed by inkjet printing. Our new approach overco ...

2023

High precision, high throughput generation of droplets containing single cells

Philippe Renaud, Arnaud Bertsch, Jiande Zhou

The Poisson limit is a major problem for the isolation of single cells in different single-cell technologies and applications. In droplet-based single-cell assays, a scheme that is increasingly popular, the intrinsic randomness during single-cell encapsula ...

ROYAL SOC CHEMISTRY2022

Dielectrophoretic Traps for Efficient Bead and Cell Trapping and Formation of Aggregates of Controlled Size and Composition

Philippe Renaud, Arnaud Bertsch, Clémentine Sophie Sarah Lipp

We present a microfluidic dielectrophoretic-actuated system designed to trap chosen single-cell and form controlled cell aggregates. A novel method is proposed to characterize the efficiency of the dielectrophoretic trapping, considering the flow speed but ...

2022

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

Impinging planar jets: hysteretic behaviour and origin of the self-sustained oscillations

Philippe Renaud, François Gallaire, Arnaud Bertsch, Alessandro Bongarzone

The experimental and numerical investigation presented by Bertsch et al. (Phys. Rev. Fluids, vol. 5, 2020a, p. 054202) describes the self-sustained oscillations induced by the interaction of two impinging jets in microfluidic devices. While the oscillatory ...

Cambridge University Press2021

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

Microfluidic-assisted bioprinting of tissues and organoids at high cell concentrations

Philippe Renaud, Arnaud Bertsch, John McKinney, Ludovic Serex, Kunal Sharma

Despite its simplicity, which makes it the most commonly used bioprinting method today, extrusion-based bioprinting suffers from its inability to reproduce the complex tissue architecture found in organs. Generally, this printing method allows for the disp ...

IOP PUBLISHING LTD2021

Planar hydrodynamic traps and buried channels for bead and cell trapping and releasing

Philippe Renaud, Arnaud Bertsch, Daniel Migliozzi, Clémentine Sophie Sarah Lipp, Jonathan Bastien Cottet

We present a novel concept for the controlled trapping and releasing of beads and cells in a PDMS microfluidic channel without obstacles present around the particle or in the channel. The trapping principle relies on a two-level microfluidic configuration: ...

ROYAL SOC CHEMISTRY2021

Volcano-Shaped Scanning Probe Microscopy Probe for Combined Force-Electrogram Recordings from Excitable Cells

Philippe Renaud, Georg Fantner, Arnaud Bertsch, Mélanie Thérèse Marie Hannebelle, Benoît Xavier Emmanuel Desbiolles

Atomic force microscopy based approaches have led to remarkable advances in the field of mechanobiology. However, linking the mechanical cues to biological responses requires complementary techniques capable of recording these physiological characteristics ...

AMER CHEMICAL SOC2020

Nanovolcano microelectrode arrays: toward long-term on-demand registration of transmembrane action potentials by controlled electroporation

Philippe Renaud, Arnaud Bertsch, Benoît Xavier Emmanuel Desbiolles, Nicolas Grégoire Maïno, Stephan Rohr, Etienne de Coulon

Volcano-shaped microelectrodes (nanovolcanoes) functionalized with nanopatterned self-assembled monolayers have recently been demonstrated to report cardiomyocyte action potentials after gaining spontaneous intracellular access. These nanovolcanoes exhibit ...

2020

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