Fabien VIALLA

^ Research activities

My PhD thesis deals with the experimental study of the optoelectronic properties of carbon nanotubes, using optical spectroscopies (Absorption, Photoluminescence, Raman) including measurements at low temperature (Helium) and at the single object scale. Intrinsic nanotube features have been studied such as the evolution of the absorption cross section depending on the chiral species and the dephasing in low temperature luminescence induced by a coupling of the exciton to the low energy acoustic phonons. Physical chemistry of nanotube/dye molecules hybrid compounds have been investigated leading to the evaluation of the non-covalent binding energies and the efficiency of an internal energy transfer.

        

^ Major publications

Unifying Low Temperature Photoluminescence Spectra of Carbon Nanotubes: the Role of Acoustic Phonon Confinement - F. Vialla et al. - Submitted to PRL

Chirality Dependence of the Absorption Cross Section of Carbon Nanotubes - F. Vialla et al. - Phys. Rev. Lett. 111, 137402 (2013)

Local Field Effects in the Energy Transfer between a Chromophore and a Carbon Nanotube: A Single-Nanocompound Investigation - C. Roquelet, F. Vialla et al. - ACS Nano, 2012, 6 (10), pp 8796–8802

Hot Electron Cooling by Acoustic Phonons in Graphene - A. C. Betz, F. Vialla et al. - Phys. Rev. Lett. 109, 056805 (2012)

^ Education

2010-2014    PhD thesis supervised by Christophe Voisin in Laboratoire Pierre Aigrain, Paris, France
2010Master2 - Condensed matter and nanoobjects physics - ENS de Cachan / UPMC
2004French High school degree (baccalauréat)

Extended curriculum vitæ

^ Contact

Laboratoire Pierre Aigrain
24, rue Lhomond, 75005 Paris, France
Room L065
Tel. : +33 (0) 1 44 32 25 56 (office) +33 (0) 1 44 32 38 55 (lab)
e-mail : fabien.vialla at lpa.ens.fr