Publications by Hong-Xu Chen | EPFL Graph Search

Compatible Buffer for Capillary Electrophoresis and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry

Hubert Girault, Natalia Gasilova, Liang Qiao, Hong-Xu Chen

A compatible buffer system for the coupling of capillary electrophoresis (CE) with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) was developed. The employed interface consists of a robot to drive a sliver-covered separation capil ...

Royal Society of Chemistry2013

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

Capillary electrophoresis immunoassay using magnetic beads

Hubert Girault, Anne-Laure Gassner, Hong-Xu Chen

Protein A-coated magnetic beads (0.3 μm) have been trapped in a small portion of a neutrally coated capillary (50 μm id). Anti-β-lactoglobulin (β-LG) antibodies have then been immobilized on the beads through strong affinity with protein A to subsequently ...

2008

Magnetic Beads Based Immunoaffinity Capillary Electrophoresis of Total Serum IgE with Laser-Induced Fluorescence Detection

Hubert Girault, Xi Zhang, Hong-Xu Chen

A magnetic beads based immunoaffinity capillary electrophoresis method for total Immunoglobulin E quantification in serum has been developed. The method combines speed, automation ability, and minimal sample consumption. Only 1 μL of serum is required whil ...

2008