Project

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Advanced Carbon Nanostructures - Polymer Composite Materials

Applicant Magrez Arnaud
Number 163441
Funding scheme Project funding
Research institution Laboratoire de nanostructures et nouveaux matériaux électroniques EPFL - SB - IPMC - LNNME
Institution of higher education EPF Lausanne - EPFL
Main discipline Material Sciences
Start/End 01.10.2015 - 30.09.2018
Approved amount 198'919.00
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Keywords (4)

thermal management; SU-8 composites; carbon nanostructures; channeling of charged particles

Lay Summary (French)

Lead
Advanced Carbon Nanostructures - Polymer Composite Materials
Lay summary

SU-8 est une résine époxy qui a été mise au point pour des applications de transfert de motif. Les propriétés intrinsèques et en particulier la robustesse chimique et mécanique ont conduit la communauté MEMS à l'utiliser. SU-8 est largement utilisé pour la fabrication de structures de facteur de forme élevé. Cependant, le polymère est isolant et fragile. La production SU-8 conducteur et présentant de meilleur propriétés mécaniques reste à réaliser. Dans les projets précédents (NSF 200020-121814) et (NSF 200021_140557), nous avons développé des composites avec des nanotubes de carbone et du graphène. Des matériaux homogènes de haute qualité ont été préparés et caractérisés. 
Nous demandons la prolongation du projet. Tout d'abord, Maryam Majidian a entrepris une vaste caractérisation structurale des matériaux composites, qui doit être achevée. Des mesures supplémentaires des propriétés mécaniques des composites à base de graphène doit être effectuée pour confirmer l'augmentation d'un facteur 2 du module de Young des composites par rapport au SU-8 pur.
De nouveaux composites seront préparés en utilisant des oignon de carbone pour compléter l'étude du comportement de percolation des composites SU-8 en fonction de la morphologie des charges (comparaison avec les nanotubes et le graphène).
Si le projet est financé, trois types de composites seront disponibles. Ils sont d'un grand intérêt pour les MEMS ainsi que les applications liées à l'énergie.

 

Direct link to Lay Summary Last update: 29.09.2015

Responsible applicant and co-applicants

Employees

Publications

Publication
Electrical transport in onion-like carbon—PMMA nanocomposites
Grimaldi Claudio, Kecsenovity Egon, Majidian Maryam, Kuznetsov Vladimir L., Magrez Arnaud, Forró László (2019), Electrical transport in onion-like carbon—PMMA nanocomposites, in Applied Physics Letters, 114(10), 103102-103102.
Role of the particle size polydispersity in the electrical conductivity of carbon nanotube-epoxy composites
Majidian Maryam, GrimaldiClaudio, ForroLaszlo, MagrezArnaud (2017), Role of the particle size polydispersity in the electrical conductivity of carbon nanotube-epoxy composites, in Scientific Reports, 12553.

Collaboration

Group / person Country
Types of collaboration
Laboratory of Composite and Polymer Technology - EPFL Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
University of Sydney Australia (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Vinca Institute of Nuclear Science in Belgrade Serbien (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
National Institute of Materials Physics Romania (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Advances in Functional Materials (AFM) Conference 2019 Talk given at a conference Photo-patternable SU8-C Nanostructures Composites 22.05.2019 Washington DC, United States of America Magrez Arnaud;
IWEPNM 2017 Talk given at a conference Photo-patternable SU8-C Nanostructures Composites 04.03.2017 Kirchberg, Austria Magrez Arnaud;
TechConnect World 2016 Talk given at a conference SU8-graphene: a new photo-patternable conductive polymer composite 22.05.2016 Washington, United States of America Majidian Maryam;


Associated projects

Number Title Start Funding scheme
140557 Carbon Nanostructures - SU8 Composites: Synthesis, Characterisation and Device Application 01.09.2012 Project funding
121814 Synthesis and characterization of Carbon Nanotubes-Functional Polymers Composites for MEMS amd Microfluidic Applications 01.10.2008 Project funding
140557 Carbon Nanostructures - SU8 Composites: Synthesis, Characterisation and Device Application 01.09.2012 Project funding
137458 Implementation in East Europe of new methods of synthesis and functionalization of carbon nanotubes for applications in the energy storage and sensors field 01.01.2012 SCOPES

Abstract

SU-8 is a negative tone epoxy resin, which has been first developed for pattern transfer application. The intrinsic properties and in particular the chemical and mechanical robustness led the MEMS community to use it for fabricating structural and active components of their device. SU-8 is widely used for the fabrication of high aspect ratio structures. However, the polymer is insulating and brittle. The production of conducting and reinforced SU-8 is yet to be realized. In the previous projects (NSF 200020-121814) and (NSF 200021_140557), we have developed carbon nanotubes and graphene based composites. High quality and homogeneous materials were prepared and characterized. Conductive composites were obtained with enhanced mechanical properties. The composites can be deposited as thin films and patterned with high resolution by photolithography.We ask for the prolongation of the project. First, Maryam Majidian has undertaken an extensive structural characterization of the composites, which needs to be completed. Additional measurements of the mechanical properties of the graphene based composites needs to be performed to confirm the 2-fold increase of the Young’s modulus of the composites as compared to pure SU8. Novel composites will be prepared using Onion like Carbon as fillers to complete the study of percolation behavior of SU-8 composites materials as a function of fillers morphology (comparison with nanotubes and graphene based composites). If the project is funded, three types of composites will be available. They are of great interest for MEMS as well as energy related applications to name just a few. The last part of the project is oriented towards fundamental research with more detailed investigations of percolation behavior of nanotubes based SU-8 composites. It is also oriented towards innovative applications, namely thermal management (thanks to the high thermal conductivity of the CNTs) and channeling of charged particles (thanks to the inner tube diameter which can easily be tuned).In conclusion, this multidisciplinary project aims at the preparation of novel carbon nanostructures based composite materials, which could be applied in a large spectrum of applications for fundamental as well as applied research including MEMS, bio-applications or energy related applications.
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