[seminar] DANAS, seminar na IF-u, u 14:00 sati
Ivica Zivkovic
zivkovic at ifs.hr
Tue Jun 12 10:03:40 CEST 2012
*ZAJEDNIČKI KOLOKVIJ FIZIČKOG ODSJEKA PMF-a I INSTITUTA ZA FIZIKU
*
*
Institut za fiziku, Bijenička 46,*
*predavaonica u zgradi Mladen Paić*
**
*u utorak, 12. lipnja 2012. u 14:00 sati
*
**
*Theoretical spectroscopy of graphene and carbon nanotubes
*
****
* Dr. Duncan John Mowbray***
*Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre,
Departamento de Física de Materiales, Universidad del País Vasco
UPV/EHU
and
DIPC (Donostia International Physic Center), E-20018 San Sebastián,
Spain
/
e-mail: duncan.mowbray at gmail.com/
*
*The novel electronic properties of graphene and carbon nanotubes have
spurred considerable interest in their use in the areas of
nanoelectronics, chemical/bio-sensors, electrocatalysts, and
nanoplasmonics, to name only a few. Experimentally, spectroscopic
techniques are well established tools for probing the electronic
structure of such materials.
However it is only recently that theoretical spectroscopy techniques
based on time dependent density functional theory (TDDFT) within the
random phase approximation (RPA) have become both semi-quantitative and
computationally feasible. In this talk, we will compare the TDDFT-RPA
dielectric response of both graphene and carbon nanotubes with recent
experimental measurements, allowing us to attribute various features in
the experimental spectra to specific electronic excitations.
These results show how particular features in the electron energy loss
spectra (EELS) may be used to determine the chirality of carbon nanotubes.
http://nano-bio.ehu.es/*
**
**
*Voditelji seminara IF-a: Vlasta Horvatić i Ivica Živković*
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