Magnetic track array for efficient bead capture in microchannels

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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, Stéphane Magnenat, Michael Bonani, 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

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 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

Magnetic forces produced by rectangular permanent magnets in static microsystems

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

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

PM motor sensorless position detection based on iron B-H local hysteresis

Yves Perriard, Miroslav Markovic, Omar Scaglione

A sensorless position detection technique for a permanent magnet (PM) motor with non-salient rotor is presented. It is shown that the phase self inductances and resistances measured at higher frequencies vary slightly with the rotor position. The origin of ...

2009

Fixed bed reactor for solid phase surface derivatization of superparamagnetic nanoparticles

Heinrich Hofmann, Alke Fink, Benedikt Steitz, Andrija Finka, Jatuporn Salaklang

The functionalization of nanoparticles is conditio sine qua non in studies of specific interaction with a biological target. Often, their biological functionality is achieved by covalent binding of bioactive molecules on a preexisting single surface coatin ...

2007

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