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MICROSYSTEMES ET MICROMANIPULATION A LEVITATION DIAMAGNETIQUE
CONCEPTION, REALISATION ET APPLICATION A LA MICROFLUIDIQUE DIGITALE ET A LA BIOLOGIE

Abstract : At small scales, various physical phenomena evolve very differently. Especially, contact, friction and adhesion forces become predominant relative to other effects. Therefore, the manipulation of entities in the micro-world becomes more than ever subject to disruptive constraints.
The present work contributes to the development of on-chip contactless manipulation techniques. Using the diamagnetic levitation principle, which benefits greatly from scale reduction, the physical contact between devices and manipulated particles can be suppressed.
Using this key feature we have developed biochips (both integrated and macroscopic prototypes) with which we demonstrated a novel form of contactless digital microfluidics in air. This technique was used to achieve contactless confinement, micropositioning and displacement of various microparticles both in air and liquids. These results open attractive alternatives to the development of fully integrated contamination-free biochemical reactors.
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https://tel.archives-ouvertes.fr/tel-00265713
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Submitted on : Thursday, March 20, 2008 - 8:52:48 AM
Last modification on : Thursday, November 19, 2020 - 1:00:09 PM
Long-term archiving on: : Thursday, May 20, 2010 - 10:18:07 PM

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  • HAL Id : tel-00265713, version 1

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Hichem Lamri Chetouani. MICROSYSTEMES ET MICROMANIPULATION A LEVITATION DIAMAGNETIQUE
CONCEPTION, REALISATION ET APPLICATION A LA MICROFLUIDIQUE DIGITALE ET A LA BIOLOGIE. Sciences de l'ingénieur [physics]. Institut National Polytechnique de Grenoble - INPG, 2007. Français. ⟨tel-00265713⟩

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