Skip to Main content Skip to Navigation
Theses

Électrodes nanocomposites pour applications en microfluidique

Mathieu Brun 1
1 INL - LOCI - INL - Lab-On-Chip et Instrumentation
INL - Institut des Nanotechnologies de Lyon
Abstract : The work presented in this thesis deals with the integration of non-conventional materials in microfluidic systems. It aims to demonstrate the potential of cPDMS, a conductive nanocomposite material made up of polydimethylsiloxane matrix mixed with carbon nanoparticles. Compatible with the usual technological processes such as soft lithography, cPDMS can be microstructured in a large range of thicknesses and geometries. Moreover, cPDMS can be quickly, irreversibly and perfectly sealed to glass, PDMS and silicon substrates, something that is not possible for conventional metallic electrodes. The first part of the manuscript is centered on the characterization of this material. Its electrical and surface properties that may turn out critical for microfluidic applications have been particularly studied. Electric fields present many opportunities to perform key functions in microfluidic (detection, separation, fluid or particles handling). We have chosen to assess the potential of cPDMS electrodes for two kinds of applications. Aspects of detection were first demonstrated using cyclic voltammetry measurements. This electrochemical method has enabled both to characterize the cPDMS surface while validating its potential as an electrochemical analysis tool. In the last part of this manuscript, cPDMS was tested for the electrokinetic manipulation of particles through thre study of different electrical fields with induced phenomena. This has led to the development of microfluidic devices (integrating cPDMS electrodes) designed for cell lysis and cells electrofusion.
Complete list of metadatas

Cited literature [222 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00744588
Contributor : Abes Star :  Contact
Submitted on : Tuesday, October 23, 2012 - 2:42:12 PM
Last modification on : Wednesday, July 8, 2020 - 12:44:04 PM
Long-term archiving on: : Thursday, January 24, 2013 - 3:40:40 AM

File

TH2011_Brun_Mathieu.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00744588, version 1

Citation

Mathieu Brun. Électrodes nanocomposites pour applications en microfluidique. Autre [cond-mat.other]. Université Claude Bernard - Lyon I, 2011. Français. ⟨NNT : 2011LYO10332⟩. ⟨tel-00744588⟩

Share

Metrics

Record views

1185

Files downloads

3768