Christophe Yamahata

Cette personne n’est plus à l’EPFL

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Publications associées (18)

Miniaturized PMMA ball-valve micropump with cylindrical electromagnetic actuator

Martinus Gijs, Christophe Yamahata, Meng Shen

2007

Pumping of mammalian cells with a nozzle-diffuser micropump

Martinus Gijs, Horst Vogel, Caroline Vandevyver, Christophe Yamahata, Frédéric Lacharme, Paulina Izewska

We discuss the successful transport of jurkat cells and 5D10 hybridoma cells using a reciprocating micropump with nozzle-diffuser elements. The effect of the pumping action on cell viability and proliferation, as well as on the damaging of cellular membran ...

Royal Society of Chemistry2005

Plastic Micropump with ferrofluidic actuation

Martinus Gijs, Heinrich Hofmann, Virendra Kumar Parashar, Alke Fink, Christophe Yamahata, Mathieu Chastellain

Institute of Electrical and Electronics Engineers2005

A PMMA valveless micropump using electromagnetic actuation

Martinus Gijs, Christophe Yamahata

We have fabricated and characterized a polymethylmethacrylate (PMMA) valveless micropump. The pump consists of two diffuser elements and a polydimethylsiloxane (PDMS) membrane with an integrated composite magnet made of NdFeB magnetic powder. A large-strok ...

2005

Magnetically actuated micropumps

Christophe Yamahata

"Lab-On-a-Chip" (LOC) systems are intended to transpose complete laboratory instrumentations on the few square centimetres of a single microfluidic chip. With such devices the objective is to minimize the time and cost associated with routine biological an ...

EPFL2005

Glass valveless micropump using electromagnetic actuation

Martinus Gijs, Christophe Yamahata, Frédéric Lacharme

We present a valveless micropump in glass, which is magnetically actuated using the sinusoidal current of an external electromagnet. We employ a powder blasting microerosion process for microstructuring the glass substrates and fusion bonding for assembly ...

2005

Electromagnetically Actuated Ball Valve Micropumps

Martinus Gijs, Christophe Yamahata, Frédéric Lacharme

We present two types of oscillating diaphragm micropumps configured with passive ball valves and using electromagnetic actuation. One type is made out of poly(methyl methacrylate) (PMMA), while the other one is made out of borosilicate glass. Both were pro ...

2005

A ball valve micropump in glass fabricated by powder blasting

Martinus Gijs, Christophe Yamahata, Frédéric Lacharme

We present the microfabrication and characterisation of a ball valve micropump in glass, which is magnetically actuated using the sinusoidal current of an external electromagnet. We employ the use of a simple powder blasting technology for microstructuring ...

2005

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