Conference Agenda

Topical Meetings and Sessions:

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

More information on the Topical Meetings

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Session Overview
TOM7 S06: Thermal radiation and energy management: Tailored Thermal emission and radiative cooling
Wednesday, 15/Sept/2021:
16:15 - 17:45

Session Chair: Marco Centini, Sapienza University of Rome, Italy
Location: Sala de Chiostro

1st Floor

16:15 - 16:45
ID: 319 / TOM7 S06: 1
TOM 7 Thermal radiation and energy management

Daytime radiative cooling: the coatings that cool down even under sunlight

Jérémie Drévillon

Institut Pprime, France

A body exposed to sunlight can be cooled by thermal radiation if it emits strongly in the infrared while being highly reflective in the in the solar spectrum range. Thus, thermal radiation emitted by the body can reach outer space, leading to efficient cooling. This is the so-called daytime radiative cooling. This principle can be used for various applications such as thermal management of buildings to reduce energy consumption. the different approaches to obtain these coatings which cool completely passively will be presented.

16:45 - 17:15
ID: 510 / TOM7 S06: 2
TOM 7 Thermal radiation and energy management

Nanophotonic control of thermal emission: from broadband directionality to radiative cooling

Aaswath Raman

University of California, Los Angeles, United States of America

We present our experimental demonstration of broadband directional thermal emission enabled by gradient epsilon-near-zero materials that can support leaky modes that couple to free-space waves at fixed angles of incidence over a broad bandwidth. We will also summarize some of our recent progress in radiative cooling, including superwhite, UV-reflective paints, and how selective thermal emitters can enable optimal radiative cooling for vertical facades that face both the ground and the sky.

17:15 - 17:45
ID: 367 / TOM7 S06: 3
TOM 7 Thermal radiation and energy management

Multi-frequency coherent emission from superstructure thermal emitters

Thomas Graeme Folland

The University of Iowa, United States of America

Spatially coherent thermal emission can be engineered by integrating periodic structures into a material supporting surface phonon polaritons. Extending functionality to additional spatial directions or emission frequencies requires using more sophisticated photonic structures. In this talk I will discuss how superstructure gratings can be used to engineer additional spatially coherent modes into the emission of a grating. In particular, we will discuss both the choice of design, as well as the limitations associated with the partial spatial coherence of surface phonon polaritons.

17:45 - 18:00
ID: 159 / TOM7 S06: 4
TOM 7 Thermal radiation and energy management

Structured temperature patterns by radiative cooling

Nicola Mara Kerschbaumer, Stefan Niedermaier, Theobald Lohmüller, Jochen Feldmann

Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539 Munich, Germany

We present a novel far-field approach to direct thermal radiation to realize spatially structured radiative cooling. By using geometrical optics, thermal energy can be transferred from a sample to a structured temperature landscape. Manipulating the thermal radiation incident on the sample, renders it possible to create a thermal pattern within the sample. We demonstrate the applicability of this novel approach of radiative cooling for structured and contactless temperature control in the laboratory by showing the possibility to induce thermal patterns and by radiative supercooling of a microfluidic sample.