Résumé:
A lab-on-a-chip (LOC) is a device that offers one or several laboratory functions using
microfluidic devices such as micropump, microvalves … etc., which manipulate fluid in
microchannel (mixing, pumping, change direction …etc), and the important component
in microfluidics devices are the actuated membrane, which are generally made of
polymer. Various actuation principles have been adopted, including electrostatic,
thermal, or piezoelectric. However, these methods present diverse limitations, making
their direct utilization difficult. The magnetic actuation shows an interesting result
because of the lack of electrical connections, the possibility of being manipulated at a
large distance, and the fast response to the external magnetic field. The aim of this
thesis is to simulate the magneto-responsivity of a magnetic nanoparticle - polymer
composite membrane, and their application in a micropump mechanism using
COMSOL Multiphysics.
