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

Select a date or location to show only sessions at that day or location. Select a single session for detailed view (with abstracts and downloads when you are logged in as registered attendee). Plenary speeches, tutorials, and Early Researcher session will be updated very soon. Thank you for your patience!

Session Overview
TOM7 S09: Thermal radiation and energy management: Thermal Waves and Photothermal techniques
Thursday, 16/Sept/2021:
16:00 - 17:30

Session Chair: Maria Cristina Larciprete, Sapienza University of Rome, Italy
Location: Sala de Chiostro

1st Floor

16:00 - 16:30
ID: 109 / TOM7 S09: 1
TOM 7 Thermal radiation and energy management

Temperonic crystal: a superlattice for temperature waves in graphene

Marco Gandolfi1,2, Claudio Giannetti3, Francesco Banfi4,5

1CNR-INO. Italy; 2Università degli Studi di Brescia, Italy; 3Università Cattolica del Sacro Cuore, Italy; 4Institut Lumière Matière (iLM), Université Lyon 1 and CNRS, France; 5Universitė de Lyon, France

The temperonic crystal, a periodic structure with a unit cell made of two slabs sustaining temperature wavelike oscillations on short timescales, is introduced. The complex-valued dispersion relation for the temperature scalar field is investigated for the case of a localized temperature pulse in graphene and discloses frequency gaps. The temperonic crystal extends the concept of superlattices to the realm of temperature waves, allowing for coherent control of ultrafast temperature pulses in the hydrodynamic regime at above liquid nitrogen temperatures.

16:30 - 16:45
ID: 512 / TOM7 S09: 2
TOM 7 Thermal radiation and energy management

Doppler effect for thermal waves

Roberto Li Voti, Mario Bertolotti

Dipartimento SBAI - Sapienza University of Rome, Italy

This paper theoretically studies the Doppler effect for thermal waves, finding an expression of the frequency shift for the two cases of moving source, and moving observer. Differences and analogies with the Doppler effect for electromagnetic and acoustic waves are highlighted. Thermal shock waves are introduced and simulated numerically. An application for nondestructive evaluation and testing of materials is also discussed.

16:45 - 17:00
ID: 513 / TOM7 S09: 3
TOM 7 Thermal radiation and energy management

Characterization of chirality in diffractive metasurfaces by photothermal deflection technique

Grigore Leahu1, Emilija Petronijevic1, Roberto Li Voti1, Alessandro Belardini1, Tiziana Cesca2, Carlo Scian2, Giovanni Mattei2, Concita Sibilia1

1University of Rome La Sapienza, Dipartimento SBAI, Via Antonio Scarpa 14, IT-00161 Rome, Italy; 2University of Padova, via Marzolo 8, I-35131 Padua, Italy

Circularly polarized excitations of opposite handedness are of great importance of properties of both natural and artificial chiral structures. In this work we propose the photothermal deflection technique as a method to detect the optical chirality of a metasurface, analysing the diffracted beams by the matasurface itself. New theoretical and numerical approaches are developed to reconstruct both thermal and optical behaviour of the chirality at the nanoscale.

17:00 - 17:30
ID: 181 / TOM7 S09: 4
TOM 7 Thermal radiation and energy management

Depth-resolved investigation of cultural heritage by pulsed thermography

Noemi Orazi1, Fulvio Mercuri1, Stefano Paoloni1, Giovanni Caruso2, Sofia Ceccarelli1, Ugo Zammit1

1Università di Roma Tor Vergata, Italy; 2CNR-ISPC

In this work, some applications of pulsed thermography (PT) for the study of cultural heritage artefacts are presented. In particular, such applications concern depth-resolved PT investigations of ancient bronzes from the Museo Nazionale Romano and historical books from the Biblioteca Angelica in Rome. It is shown how the study of the two types of artefacts requires different thermographic approaches, both in term of experimental configuration and signal modelling. due to the different opto-thermal properties of the constituent materials.