Electronic and Vibrational Properties of Carbon Nanotubes and Graphene
Ado Jorio, Departamento de Física, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
The first speaker Prof. Ado Jorio will speak about the electronic and vibrational properties of carbon nanotubes and graphene, on the lights of resonance Raman spectroscopy. For carbon nanotubes, in situ nanomanipulation and light scattering elucidates the effects of tube-substrate interactions, including substrate-induced changes on the electronic properties and mechanical stability. For graphene, the formation of the so-called twisted bi-layer graphene is followed by superlattice induced effects that generate van Hove singularities in the joint density of electronic states and activate phonons from inside the Brillouin zone. The advances on the use of tip-enhanced Raman spectroscopy (TERS) to probe local events will be also discussed.
This talk starts with an introduction to the electronic and vibrational properties of two-dimensional graphene and one-dimensional carbon nanotubes. The similarities and differences among these materials will be explored, addressing a broad range of different aspects – quantum correlation, quantum confinement, superlattices, environmental coupling... The main tool is light scattering, but microscopy and other spectroscopy techniques are also discussed.
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