SEL 2022

From 09/12/2022 to 09/23/2022

La Vieille Perrotine - CAES du CNRS - 140 Route des Allards, 17310 Saint Pierre d'Oléron



The objective of this school is threefold:
To contribute to the initial training of young researchers working in the field of nanophononics by presenting them a detailed state of the art of this discipline offering numerous themes of fundamental and applied research.

To stimulate and strengthen the interactions between the different communities of physicists and/or biophysicists dedicated to the study of phonons with experimental approaches (ultrafast or vibrational spectroscopy, X-ray probe, etc. ), objects of study (metallic materials, semiconductors or dielectrics confined to the nanometric scale in 1, 2 or 3 dimensions, biological structures, soft matter...), vocabularies and purposes (answer to fundamental questions or development of innovative technological applications), and having few opportunities to exchange outside the schools of sound and light. These exchanges will most likely allow the establishment of interesting parallels between the concepts dealt with by the different communities and will facilitate the implementation of innovative and resolutely multidisciplinary research projects.

Attracting researchers/engineers from industrial R&D centers (Essilor, Thalès, etc.) and from laboratories shared with the CNRS (Saint Gobain Research, Thalès, STMicroelectronics, etc.) to participate or as speakers to illustrate industrial applications.

The objective of the session will be to provide participants with a solid foundation in the field of nanophonics through in-depth and pedagogical lectures that will introduce the basic concepts of this discipline, describe the fundamental issues studied and the associated technological problems, and present the experimental and theoretical approaches available to address them. Topics include physical concepts, experimental techniques, HP-HT environments, modeling and applications of ultrasonic waves:

Inelastic scattering of light by phonons (Brillouin and Raman spectroscopies)

- Interactions between photons, phonons and magnons
- Optomechanics: coupling mechanisms, phononic crystals, quantum regime
- Vibration damping mechanisms
- Acoustic cavities
- Surface acoustic waves
- Thermal transport at the nanoscale: ballistic and diffusive regimes, interface resistances
- Time and frequency resolved termoreflectance
- Acoustic interactions between close nano-objects and in periodic structures (phononic crystals, metamaterials, etc.)
- Optical generation / detection of GHz / THz phonons (picosecond acoustics)
- Ultrafast optical spectroscopy
- THz spectroscopy
- Use of X-rays to probe matter

High pressure-high temperature environments

- Technological, biological and medical applications of ultrasonic waves