Mardi 13 février à 11h00 / Amphithéâtre Canac, LMA
Abstract : Wave transport in complex media is widely studied through calibrated model systems ranging from nano-powder (in optics) to millimetric beads aggregates (in acoustics). Those samples are designed to strongly scatter waves and achieve complex transport phenomena such as wave sub-diffusion. In this seminar, I will show how model systems achieved by millifluidics are good candidates to study such phenomena with ultrasounds. Then, we will see how similar observations can be done in a natural disordered system namely: a shoal of fish. The parallel between laboratory and in situ experiments gives i) new characterization tools for fisheries acoustics and ii) leads for the bio-inspired design of disordered systems.
Benoît Tallon / Sorbonne Université