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Non-monotonic Radiative Heat Transfer in the Transition from Far Field to Near Field by Guillemot, Victor; Messina, Riccardo; Krachmalnicoff, Valentina; Carminati, Rémi; Ben-Abdallah, Philippe; Poirier, Wilfrid; De Wilde, Yannick is a scholarly article available to read on EtoBox.

What is Non-monotonic Radiative Heat Transfer in the Transition from Far Field to Near Field about?

We present high precision measurements of the radiative heat transfer of a glass microsphere immersed in a thermal bath in vacuum facing three different planar substrates (SiO2, SiC and Au), which exhibit very different optical behaviors in the infrared region. Using a thermoresistive probe on a cantilever, we show the non-monotonic behavior of the radiative flux between the microsphere and its environment when the microsphere is brought closer to the substrate in the far-field to near-field transition regime. We demonstrate that this unexpected behavior is related to the singularities of dressed emission mechanisms in this three-body system sphere-substrate-bath with respect to the separation distance.

Author

Guillemot, Victor; Messina, Riccardo; Krachmalnicoff, Valentina; Carminati, Rémi; Ben-Abdallah, Philippe; Poirier, Wilfrid; De Wilde, Yannick

Published

2024

Language

EN