Quantum molecular dynamics to model surface phonon polaritons nanoparticles resonances in the THz regime

DIPC Seminars

Speaker: Prof. Jean-Jacques Greffet, Institut d'Optique Graduate School, Institut Universitaire de France, Palaiseau, France
When: 2010/04/23
14:00
Place: Donostia International Physics Center (DIPC).Paseo Manuel de Lardizabal, 4 (nearby the Facultad de Quimica), Donostia
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Quantum molecular dynamics to model surface phonon polaritons nanoparticles resonances in the THz regime

Abstract: I will discuss several isues related to the dynamics of surface phonon polaritons. In the first part of the talk, I will analyse the resonances of ZnO nanoparticles in the THz regime. A molecular dynamics approach will be used to study resonances of the particle. This will allow to analyse the origin of non-local effects. The second part of the talk will deal with the introduction of quantum effects in molecular dynamics[1]. It has been taken for granted that molecular dynamics can only be applied in the framework of the classical approximation. We will discuss how quantum statistical effects can be included in a standard molecular dynamics approach. Finally, I will present recent results related to the measurement of radiative heat transfer in the near-field [2]. 1\. Quantum thermal bath for molecular dynamics simulation, H. Dammak, Y. Chalopin, M. Laroche, M. Hayoun, J.J. Greffet, Phys.Rev.Lett. *103*, 190601 (2009) 2\. Radiative heat transfer at the nanoscale, E. Rousseau, A. Siria, G. Jourdan, S. Volz, F. Comin, J. Chevrier and J.J. Greffet, Nature Photonics *3*, p 514 (2009)