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Magnetic track array for efficient bead capture in microchannels

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Publications associées (46)

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A Practical Solution to Mitigate Vibrations in Industrial PM Motors Having Concentric Windings

Dimitri Torregrossa, Luc Burdet

Industry applications involving torque brushless dc motors require high efficiency over a large speed range. In order to achieve such specifications, flux weakening is necessary, which could lead to relative high electromagnetically induced vibrations and ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Tailor-made Piezoelectric Elastomer Materials

Francis Owusu

Recent advancements in miniature devices with higher computational capabilities and ultralow power consumption have accelerated the development of wearable sensors, actuators, and energy harvesters everywhere. The ultimate aim of such a technological revol ...

EPFL2023

Amperometric Measurements by a Novel Aerosol Jet Printed Flexible Sensor for Wearable Applications

Sandro Carrara, Sarah Tonello

the last years, increasing interest has been addressed on wearable devices for the continuous monitoring of biochemical profiles of patients and athletes. Among various markers, lactate represents one of the most interesting to deepen the knowledge on fati ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023

Slotless Permanent-Magnet Machines: General Analytical Magnetic Field Calculation

Yves Perriard, Pierre-Daniel Pfister

This paper presents a general analytical model for predicting the magnetic field of slotless permanent-magnet machines. The model takes into account the effect of eddy currents in conductive regions and notably in conductive permanent magnets without negle ...

Institute of Electrical and Electronics Engineers2011

Scanning Small-Angle X-ray Scattering of Injection-Molded Polymers: Anisotropic Structure and Mechanical Properties of Low-Density Polyethylene

Marianne Liebi, Manuel Guizar Sicairos

Injection molding is known to create a layered anisotropicmorphologyacross the sample thickness due to varying shear and cooling ratesduring the manufacturing process. In this study, scanning small-angleX-ray scattering was used to visualize and quantify t ...

AMER CHEMICAL SOC2023

Magnetic Stationary Phases for Protein Adsorption

Anne-Laure Gassner

Magnetic beads (MB) have now proven to be a powerful tool in both research and biomedical applications. They are available in a wide range of sizes (from nm to several µm) and their surface can be modified with molecules having biological specificities and ...

EPFL2011

Understanding unconventional magnetic order in a candidate axion insulator by resonant elastic x-ray scattering

Henrik Moodysson Rønnow, Frédéric Mila, Jian Rui Soh

Magnetic topological insulators and semimetals are a class of crystalline solids whose properties are strongly influenced by the coupling between non-trivial electronic topology and magnetic spin configurations. Such materials can host exotic electromagnet ...

Nature Portfolio2023

Ring magnets for magnetic beads trapping in a capillary

Hubert Girault, Anne-Laure Gassner

This paper introduces the concept of ring magnets for magnetic beads (MBs) trapping in a capillary. Such magnets enable an easy insertion of a capillary simply like a pearl on a string. With this system, high magnetic forces are obtained thanks to the prox ...

Royal Society of Chemistry2011

Computational design and additive manufacturing of electromagnetic coils

Adrien Jean-Michel Thabuis

The modern world is heavily reliant on electromagnetic devices to convert mechanical energy into electrical energy and vice versa. These devices are fundamental to powering our society, and the growing need for automated production lines and electrified tr ...

EPFL2023

Breaking one into three: Surface-tension-driven droplet breakup in T-junctions

Philippe Renaud, François Gallaire, Arnaud Bertsch, Daniel Migliozzi, Yves-Marie François Ducimetière, Jiande Zhou, Ludovic Pierre Gustave Keiser

Droplet breakup is an important phenomenon in the field of microfluidics to generate daughter droplets. In this work, a novel breakup regime in the widely studied T-junction geometry is reported, where the pinch-off occurs laterally in the two outlet chann ...

AMER PHYSICAL SOC2023

Analyse et mise en oeuvre d'un moteur électromagnétique microfabriqué

Sebastiano Merzaghi

Until now, the preferred solution for MEMS (Micro Electro Mechanical Systems) actuation is the electrostatic one. The main reason is that this kind of actuators can be easily manufactured following the microfabrication rules, as their geometry perfectly fi ...

EPFL2010

An early separation scheme for the LHC luminosity upgrade

In this thesis we evaluate the potential of the Early Separation Scheme for the Luminosity Upgrade of the Large Hadron Collider (LHC). The main goal of the Early Separation Scheme is to reduce the crossing angle between the proton beams at the collision po ...

EPFL2010

Design of Magnetic Switchable Device (MSD) and applications in climbing robot

Francesco Mondada, Hannes Bleuler, Michael Bonani, Stéphane Magnenat, Frédéric Rochat, Patrick Schoeneich

A Magnetic Switchable Device (MSD) is a ferromagnetic circuit using permanent magnets where the flux can circulate between different paths when its configuration is changed. This routes or cancels the flux through specific surfaces, and thus turns on or of ...

World Scientific2010

Functionalization of polymer optical fibers for medical application

Jialuo Luo

The increasing challenges caused by the growing and aging population and the fast pace of life are calling for a change of our current medical care system towards being rapid, easy, and on-demand self-care. Empowerment with the self-caring components such ...

EPFL2022

Rapid Prototyping of Microfluidic Devices : Realization of Magnetic Micropumps, Fuel Cells and Protein Preconcentrators

Meng Shen

With the growing importance of miniaturized energy applications and the development of micro Total Analysis Systems (μTAS), we have realized microfluidic devices, namely, magnetic micropumps, microfluidic fuel cells and membrane-based protein preconcentrat ...

EPFL2010

Dispositif de manipulation et de transport de perles magnetiques

Martinus Adela Maria Gijs, Amar Rida

A device for transporting magnetic or magnetisable microbeads ( 25 ) in a capillary chamber ( 14 ) comprises a permanent magnet ( 10 ) or an electromagnet ( 11 ) for subjecting the capillary chamber to a substantially uniform magnetic field, to apply a per ...

2009

Design of multi-stimuli responsive hybrid pneumatic-magnetic soft actuator with novel channel integration

Yi Sun

Smart polymeric materials based soft actuators are flexible, lightweight, and can deliver a wide range of actu-ations. Thus, they are ideal for applications requiring delicate and unconventional motions, such as biomedical and soft robotics. This paper rep ...

2022

KCo2As2: A new portal for the physics of high-purity metals

Lin Yang

High-quality single crystals of KCo2As2 with the body-centered tetragonal ThCr2Si2 structure were grown using KAs self flux. Structural, magnetic, thermal, and electrical transport properties were investigated. No clear evidence for any phase transitions w ...

2022

Magnetic forces produced by rectangular permanent magnets in static microsystems

Hubert Girault, Joël Stéphane Rossier, Anne-Laure Gassner, Mélanie Abonnenc

Finite element numerical simulations were carried out in 2D geometries to map the magnetic field and force distribution produced by rectangular permanent magnets as a function of their size and position with respect to a microchannel. A single magnet, two ...

2009

Modelling and Sensors for Magnetically-Levitated Disc Drives

Juan Patricio Tomás Peralta Fierro

The development of new industrial applications has diverted the focus of research towards compacter and faster rotatory drives. These requirements push the classical ball-bearings of electric motors to the limits in terms of operational lifetime and fricti ...

EPFL2022