Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)


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Investigation of the growth of carbon nanotubes by Raman scattering

par Christelle EVE - publié le

Research Internship – 2019-2020 - Master 2

Context :
Discovered in the early 90’s, carbon nanotubes have been extensively used as a material for fundamental studies of 1D systems, in a large variety of fields such as electronics, optics, mechanics etc. Recently, a new field has emerged that probes the properties of matter confined within the hollow core of the nanotube. Given the diameter of the nanotube, in the range of 1 nm, the confinement is of molecular dimension. A new wealth of physical properties of matter is expected to arise from this extremely confined situation : self-aligned molecules [1,2], frictionless flow [3] and so on.
However, most experimental studies are struggling with the ability to obtain individual carbon nanotubes with the desired diameter. We propose to investigate by optical means (eg. Raman scattering) the properties of carbon nanotubes synthetized in our lab in order to develop a new fabrication process.

[1] S. Cambré et al., Nature Nanotechnologies 10, 248-252 (2015)
[2] E. Gaufrès et al., Nature Photonics 8, 72-78 (2014)
[3] K. Falk et al., Nano Letters 10, 4067-4073 (2010)

Scientific and technical work :
The internship aims at developing a method to grow carbon nanotubes of small diameter, isolated and long. The project will involve experimental technics such as Raman scattering and computer analysis tools. Light chemistry and clean-room techniques may be involved as well.

In this project, the student will :
-  Learn and use Raman scattering to probe the properties of carbon nanotubes
-  Analyze the experimental data by mean of software or computer language (Origin, Matlab, Python…)
-  Synthetize the obtained results for discussing them with the consortium of researchers involved
If needed, the student may :
-  Prepare new catalyst for the growth of nanotubes (light chemistry steps)
-  Participate in the lithography of catalyst (clean-room work)
-  Learn and use micro-photoluminescence spectroscopy to probe the properties of suspended carbon nanotubes

This project is adapted for a student with a background in physics, applied physics, nanosciences or chemical physics. Prior knowledge of carbon nanotube science is not necessary. The internship involves substantial experimental work, so the taste for experimental work is mandatory. Strong taste for interdisciplinary research and learning is also essential.

Additional information :
Length of the internship : 4 to 6 months
Starting date : flexible, to be defined with the candidate
The student will receive a grant of 500€/month

Contact : Vincent Jourdain