This Symposium on Acoustic Metamaterials is targeted to PhD candidates, Early Career Investigators (i.e. researcher whose career spun less than 8 years since the date of the PhD) and aims at sharing new advances and breakthroughs as well as fostering the community of young researchers in the field of acoustic metamaterials. The fifth SAM will be organised around 5 different sessions comprising 20 min talks and plenary lectures. Discipline scientifique :