Auditorium (salle 1035)
5155, avenue Decelles
Montréal (QC) Canada  H3T 2B1

Raphael St-Gelais (Cornell Nanophotonics Group)

Radiative heat transfer between objects separated by subwavelength distances offers unprecedented opportunities for energy generation and heat flow control applications. In the optical near-field, heat transfer can occur through evanescent coupling of thermally excited infrared surface resonances (i.e., plasmonic or phononic surface resonances). This heat transport mechanism can overcome the classical far-field radiation limit (i.e., Stefan-Boltzmann law) by several orders of magnitude, while occurring over a quasi-monochromatic frequency range. These unique characteristics could enable new exciting applications, such as near-field thermophotovolatic energy generation, or active heat flow control devices such as thermal rectifiers and thermal transistors. I will review these prospective applications and present our recent work [1], in which we achieved the first experimental demonstration of near-field radiative heat transfer between integrated nanostructures.

[1] Demonstration of Strong Near-Field Radiative Heat Transfer between Integrated Nanostructures, Raphael St-Gelais, Biswajeet Guha, Linxiao Zhu, Shanhui Fan, and Michal Lipson, Nano Letters 2014 14 (12), 6971-6975

Cette conférence est présentée par le RQMP Versant Nord du Département de physique de l'Université de Montréal et le Département de génie physique de Polytechnique Montréal.

Radiative heat transfer in the optical near-field: new opportunities for energy generation and heat flow control - Raphael St-Gelais (Cornell Nanophot
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