The NanoAcoustics team is mainly focused on instrumental developments, with the filing or publication of numerous patents, and the creation of the start-up MenaPic. Invented in the 1980s, picosecond acoustics transposes traditional physical acoustics to the nanometric scale using ultrashort pulse lasers. With frequencies in excess of 100 GHz, it is well suited to the elastic characterisation of thin films, heterostructures and other nanostructures. The originality of our research lies in the use of laser wavelengths, which we have shown to broaden the scope of the technique. We have thus added a coloured dimension to the technique, which has become coloured picosecond acoustics, our day-to-day working tool [Ultrasonic14].

Contact : Arnaud DEVOS. Arnaud.devos@iemn.fr