TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session
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TOM7 S02: Thermal radiation and energy management: Nanoscale Heat Transfer 2
16:15 - 17:45
Session Chair: Mauro Antezza, Université de Montpellier, France
Location:Sala de Chiostro 1st Floor
16:15 - 16:45 Invited ID: 261 / TOM7 S02: 1 TOM 7 Thermal radiation and energy management
Nanoscale heat flux: non-reciprocity, anisotropy, and topology
Oldenburg University, Germany
Here, we discuss different mechanisms to rectify and switch the nanoscale radiative heat flux in many-body systems by means of non-reciprocal and hyperbolic surface waves. We furthermore, discuss the impact of topologically protected edge modes in 1D Su-Schrieffer-Heeger chains and 2D Su-Schrieffer-Heeger lattices on the radiative heat flux and thermal energy density.
16:45 - 17:00 ID: 446 / TOM7 S02: 2 TOM 7 Thermal radiation and energy management
Radiative thermal rectification in systems with many bodies
Ivan Latella1, Philippe Ben-Abdallah2, Moladad Nikbakht3
1Universitat de Barcelona, Spain; 2Institut d’Optique, France; 3University of Zanjan, Iran
Radiative thermal diodes based on two-element structures rectify heat flows thanks to a temperature dependence of the material optical properties. Here we explore the heat transport in three-element radiative systems (two terminals and a passive intermediate body) and demonstrate that a strong asymmetry in the thermal conductance can appear because of many-body interactions, without any dependence of optical properties with respect to the temperature. The analysis of transport in systems made with polar dielectrics and metallic layers reveals that rectification coefficients exceeding 50 % can be achieved in near-field regime.
17:00 - 17:15 ID: 425 / TOM7 S02: 3 TOM 7 Thermal radiation and energy management
Heat transport using nonreciprocal media
Nico Strauß, Stefan Yoshi Buhmann
Kassel University, Germany
The second law of thermodynamics dictates that heat flows from warm to cold objects, thereby providing a direction of time. In the optics of nonreciprocal media, an arrow of time is alternatively provided by the observation that optical paths cannot be reversed. How are these two notions compatible of the level of quantum electrodynamics? In order to answer this question, we calculate the nanoscale heat transfer between two objects, in our case between two plates, which consist of nonreciprocal media.
17:15 - 17:45 Invited ID: 203 / TOM7 S02: 4 TOM 7 Thermal radiation and energy management
Quantum and thermal fluctuations between high-temperature superconductors.
Shunashi Guadalupe Castillo López, Carlos Villarreal, Raúl Patricio Esquivel Sirvent, Giuseppe Pirruccio
Universidad Nacional Autónoma de México, Mexico
The management of quantum and thermal fluctuations in nanodevices can be achieved using high-Tc superconductors. We investigate this possibility through a theoretical study of the radiative heat transfer and the non-equilibrium Casimir forces between two YBCO slabs at different temperatures. The superconducting phase transition induces an abrupt suppression of the heat flux. For thin films, the heat transfer is enhanced up to one order of magnitude with respect to bulk. Similarly, the Casimir forces suffer abrupt variations in and out of thermal equilibrium, being these detectable at the micrometer scale.