| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Cojocaru, Costel Sorin
École Polytechnique
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2019Anisotropy of Assemblies of Densely Packed Co-Alloy Nanoparticles Embedded in Carbon Nanotubescitations
- 2016Optical Scale Polarimetric Device for Nanotube Forest Measurement: An Opportunity to Anticipate Bistatic Polarimetric SAR Images of Tree Trunk Forests at P-Bandcitations
- 2016Optical Scale Polarimetric Device for Nanotube Forest Measurement: An Opportunity to Anticipate Bistatic Polarimetric SAR Images of Tree Trunk Forests at P-Bandcitations
- 2014Nanosecond-laser-induced graphitization and amorphization of thin nano-crystalline graphite films
- 2012Different mechanisms of graphene wall nucleation on Fe and Ni particles
- 2012Current Saturation in Field Emission from H-Passivated Si Nanowirescitations
- 2011Vertically oriented nickel nanorod/carbon nanofiber core/shell structures synthesized by plasma-enhanced chemical vapor depositioncitations
- 2011Iron catalysts for the growth of carbon nanofibers: Fe, Fe3C or both?citations
- 2011Iron catalysts for the growth of carbon nanofibers : Fe, Fe_{3}C$ or both?
- 2011High-quality Single-walled carbon nanotubes synthesis by hot filament CVD on Ru nanoparticule catalystcitations
- 2011Synthesis of few-layered graphene by ion implantation of carbon in nickel thin filmscitations
- 2011Laterally organized carbon nanotube arrays based on hot-filament chemical vapor deposition
- 2010Iron catalyst for the growth of carbon nanofibers: Fe, Fe3C or both?citations
- 2010Nickel catalyst faceting in plasma-enhanced direct current chemical vapor deposition of carbon nanofibers
- 2009Conductance of disordered semiconducting nanowires and carbon nanotubes: a chain of quantum dotscitations
- 2008Growth of vertically aligned arrays of carbon nanotubes for high field emissioncitations
- 2008Localized CVD growth of oriented and individual carbon nanotubes from nanoscaled dots prepared by lithographic sequencescitations
- 2008Density control of electrodeposited Ni nanoparticles/nanowires inside porous anodic alumina templates by an exponential anodization voltage decreasecitations
- 2007Aligned carbon nanotubes catalytically grown on iron-based nanoparticles obtained by laser-induced CVDcitations
- 2006On the role of activation mode in the plasma- and hot filaments-enhanced catalytic chemical vapour deposition of vertically aligned carbon nanotubescitations
- 2006Synthesis of multi-walled carbon nanotubes by combining hot-wire and dc plasma-enhanced chemical vapor depositioncitations
- 2006Study of electron field emission from arrays of multi-walled carbon nanotubes synthesized by hot-wire dc plasma-enhanced chemical vapor depositioncitations
- 2003Ni and Ni/Pt filling inside multiwalled carbon nanotubescitations
Places of action
| Organizations | Location | People |
|---|
article
Ni and Ni/Pt filling inside multiwalled carbon nanotubes
Abstract
International audience ; Multiwalled carbon nanotubes are grown by microwave plasma chemical vapor deposition with CH4 and H2 as precursor gases. Ni and Ni/Pt electroplated layers are used as catalysts for the synthesis of the tubes. We observe that a very efficient filling of the tubes takes place with Ni. In some cases Ni/Pt filling is also observed inside the tubes. High-resolution transmission electron microscopy (HRTEM) studies, coupled with energy-dispersive X-ray analyses of the tubes, indicate Ni nanorods with a highly symmetrical cylindrical structure. The diameter of the cylindrical nanorods is on the order of 40 nm, and their length is 660 nm. The nano area diffraction pattern of the nanorods reveals the cubic structure of nickel, and electron diffraction spots corresponding to (111), (200), (220) planes are evident. The lattice constant of Ni measured from the diffraction spots was found to be 0.347 ± 0.0013 nm. This should be compared with 0.352 nm, the value of "a" in bulk Ni. The decrease in the lattice constant may be due to the strain experienced inside the tubes. Raman spectroscopy shows the typical signature of the tangential breathing mode present in the tubes at 1580 cm-1 that shifts to a new position when the C12 is replaced by 13C. The shift, however, is too small and is difficult to explain on the basis of mass difference. HRTEM experiments indicate the presence of Ni3C in the samples dominantly in the interfacial region.