Heat transfer between two nanoparticles through near field interaction.
We introduce a thermal conductance by using the fluctuation-dissipation theorem to analyze the heat transfer between two nanoparticles separated by a submicron distance. Using either a molecular dynamics technique or a model based on the Coulomb interaction between fluctuating dipoles, we derive the thermal conductance. Both models agree for distances larger than a few diameters. For separation distances smaller than the particle diameter, we find a transition regime characterized by a thermal conductance larger than the contact conductance.
Domingues
Gilberto
G
Laboratoire d'Etudes Thermiques, 86961 Futuroscope Cedex, France. gilberto.dominguez@let.ensma.fr
Volz
Sebastian
S
Joulain
Karl
K
Greffet
Jean-Jacques
JJ