Nanothermics: ultrafast optical characterization of thermal transfer at the nanoscale

Nanothérmique : charactérization optique ultrarapide du transfert thérmique à l'échelle nanométrique

 

With the fast development of micro- and nano-size devices, heat transfer at nanoscale has become a central problem in nanosciences and nanotechnology, fostering a fast emergence of this new field.

In this context, optics has the great advantage of being a non contact method. Time-resolved optical spectroscopy of metal nanoparticles, which can be used as both local heaters and heat detectors, is a powerful tool to investigate such thermal processes. Under some specific experimental conditions, the long-delay time-resolved optical transmission signal being proportional to the nanoparticle temperature, it provides a unique way to measure its cooling kinetics after an initial impulsive excitation. These investigations lead to a more fundamental understanding of different mechanisms responsible for heat transfer at nanoscale, including the thermal interface resistance between nanoparticles and the environment, and to their modification with size confinement.

With the fast development of micro- and nano-size devices, heat transfer at nanoscale has become a central problem in nanosciences and nanotechnology, fostering a fast emergence of this new field.

In this context, optics has the great advantage of being a non contact method. Time-resolved optical spectroscopy of metal nanoparticles, which can be used as both local heaters and heat detectors, is a powerful tool to investigate such thermal processes. Under some specific experimental conditions, the long-delay time-resolved optical transmission signal being proportional to the nanoparticle temperature, it provides a unique way to measure its cooling kinetics after an initial impulsive excitation. These investigations lead to a more fundamental understanding of different mechanisms responsible for heat transfer at nanoscale, including the thermal interface resistance between nanoparticles and the environment, and to their modification with size confinement.

Selection of publications on nanothermics

Selection of publications on nanothermics

 

T.Stoll, P. Maioli, A.Crut, S.Rodal-Cedeira, I. Pastoriza-Santos, F. Vallée, and N. Del Fatti

"Time-Resolved Investigations of the Cooling Dynamics of Metal Nanoparticles: Impact of Environment"

Journal of Physical Chemistry C (2015)

 

F. Banfi, V. Juvé, D. Nardi, S. Dal Conte, C. Giannetti, G. Ferrini, N. Del Fatti, and F. Vallée

"Temperature dependence of the thermal boundary resistivity of glass-embedded metal nanoparticles"

Applied Physics Letters 100, 011902 (2012)

 

V. Juvé, M. Scardamaglia, P. Maioli, A. Crut, S. Merabia, L. Joly, N. Del Fatti, and F. Vallée

"Cooling dynamics and thermal interface resistance of glass-embedded metal nanoparticles"

Physical Review B. 80, 195406 (2009)

 

 

Full list of publications of the FemtoNanoOptics group

Liste complète des publications de l'équipe FemtoNanoOptics

 

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