Thermalization via Heat Radiation of an Individual Object Thinner than the Thermal Wavelength

Arno Rauschenbeutel (HU Berlin)

Feb 14. 2023, 11:00 — 11:25

Modeling and investigating the thermalization of microscopic objects with arbitrary shape from first principles is of fundamental interest and may lead to technical applications. In this talk, I will report on a study of the thermalization dynamics due to far-field heat radiation of an individual, deterministically produced silica fiber with a predetermined shape and a diameter smaller than the thermal wavelength. The temperature change of the subwavelength-diameter fiber is determined through a measurement of its optical path length in conjunction with an ab initio thermodynamic model of the fiber structure. Our results show excellent agreement with a theoretical model that considers heat radiation as a volumetric effect and takes the emitter shape and size relative to the emission wavelength into account.

[1] C. Wuttke and A. Rauschenbeutel, Phys. Rev. Lett. 111, 024301 (2013).

Further Information
ESI Boltzmann Lecture Hall
Associated Event:
Blackbody Radiation Induced Effects and Phenomena (Workshop)
Philipp Haslinger (TU Vienna)
Francesco Intravaia (HU Berlin)
Arkadiusz Kosior (U of Innsbruck)
Dennis R├Ątzel (ZARM, Bremen)