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A ferrofluid micropump for lab-on-a-chip applications

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Multiplexed surface micropatterning of proteins with a pressure-modulated microfluidic button-membrane

Sebastian Maerkl, Jose Luis Garcia Cordero

We report the flow-based in situ patterning of multiple proteins in microfluidic channels by simply tuning the actuation pressure of a microfluidic button-membrane. We show that a single button-membrane can pattern several concentric protein annuli, and we ...

Royal Soc Chemistry2013

Development of Elastomeric Optofluidic Devices for Lasing and Sensing

Wuzhou Song

The term of optofluidics defines an emergent research field that combines microfluidics and optics. In many lab-on-a-chip applications, these two technologies are used in combining the microfluidics for sample delivery and optics for sensing and controllin ...

EPFL2012

Elastomer based tunable optofluidic devices

Demetri Psaltis, Andreas Vasdekis, Wuzhou Song

The synergetic integration of photonics and microfluidics has enabled a wide range of optofluidic devices that can be tuned based on various physical mechanisms. One such tuning mechanism can be realized based on the elasticity of polydimethylsiloxane (PDM ...

Royal Society of Chemistry2012

Separation and Focusing of Magnetic Beads for Agglutination Tests

Rana Afshar Ghasemlouy

Functional magnetic micro- and nanoparticles are used in bioanalytical applications as solid carriers for capture, transport and detection of biomolecules or magnetically labeled cells. Colloidal suspensions of such particles provide a large specific surfa ...

EPFL2011

Magnetic active-valve micropump actuated by a rotating magnetic assembly

Martinus Gijs, Meng Shen

We report on a high-efficiency and self-priming active-valve micropump consisting of a microfluidic chamber structure in glass that is assembled with a polydimethylsiloxane (PDMS) elastic sheet. The latter comprises two valving membranes and a central pump ...

Elsevier2011

Magnetic particle dosing and size separation in a microfluidic channel

Martinus Gijs, Thomas Lehnert, Yves Moser, Rana Afshar Ghasemlouy

Separation of functional magnetic particles or magnetically labeled entities is a key feature for bioanalytical or biomedical applications and therefore also an important component of lab-on-a-chip devices for biological applications. We present a novel in ...

2011

Magnetic particle dosing and size separation in a microfluidic channel

Martinus Gijs, Thomas Lehnert, Yves Moser, Rana Afshar Ghasemlouy

2011

Design for Self-Sensing of a Linear Actuator

Yves Perriard, Miroslav Markovic, Joël Maridor

This paper presents a complete method for optimizing a linear actuator in order to perform its sensorless speed control. The optimizer maximizes the difference of inductances between two positions of interest in order to perform the efficient position dete ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Design for Self-Sensing of a Linear Actuator

Yves Perriard, Miroslav Markovic, Joël Maridor

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Pressure mediated tunable elastomeric optofluidic devices

Demetri Psaltis, Wuzhou Song

We introduce a novel tuning mechanism based on pressure actuating force, which can enable a broad spectrum of tunable elastomeric optofluidic devices. Thanks to the flexibility of the Polydimethylsiloxane (PDMS) material, the local deformation inside PDMS ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010