Skip to Main content Skip to Navigation
Theses

NOUVEAU PROCEDE DE CROISSANCE DE NANOFILS A BASE DE SiC ET DE NANOTUBES DE BN, ETUDE DES PROPRIETES PHYSIQUES D'UN NANOFIL INDIVIDUEL A BASE DE SiC

Abstract : This study is focused on SiC nanowires (NWs) and BN Nanotubes (NTs). A new process, based on the high-temperature (1400°C) reaction of carbon precursors with silicon precursors on the surface a graphite plate, was found to yield mass-production of SiC NWs. The main advantages of this process are the low-cost of the ensuing NWs, no requirement of any purification step, and the possibility to generate in situ a coating on the NWs surface with tunable chemical composition (silica or carbon) and tunable thickness. Chemical and Structural modifications of these SiC NWs have been performed and yielded multifunctional 1D nanostructures, incorporating for instance BN and ZnO. The process was successfully extended to the synthesis of BN NTs. The latter have also been prepared by template route associated with the polymer-derived ceramics approach. Borazine, H3B3N3H3, was used as molecular precursor. Advances towards applications were performed with the localization of SiC NWs onto Si or SiC substrates, and the successful incorporation of SiC NWs into inorganic matrices. Physical properties of an individual SiC NW was studied by Raman Spectroscopy and Field Emission.
Document type :
Theses
Complete list of metadatas

Cited literature [212 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00139430
Contributor : Mikhael Bechelany <>
Submitted on : Friday, March 30, 2007 - 4:25:03 PM
Last modification on : Monday, October 19, 2020 - 11:06:39 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 11:55:21 PM

Identifiers

  • HAL Id : tel-00139430, version 1

Collections

Citation

Mikhael Bechelany. NOUVEAU PROCEDE DE CROISSANCE DE NANOFILS A BASE DE SiC ET DE NANOTUBES DE BN, ETUDE DES PROPRIETES PHYSIQUES D'UN NANOFIL INDIVIDUEL A BASE DE SiC. Matériaux. Université Claude Bernard - Lyon I, 2006. Français. ⟨tel-00139430⟩

Share

Metrics

Record views

374

Files downloads

935