Vicente Romero-García is a CNRS researcher at Laboratoire d'Acoustique de l'Université du Mans (LAUM), France. He is the leader of the research axis "Metamaterials" at LAUM and "Metamaterials for audible sound" at the GdR META.

Anne-Christine Hladky-Hennion is a principal scientist at the CNRS and at the Institute of Electronics, Microelectronics and Nanotechnology (IEMN), France. Her main research interests are phononic structures and acoustic metamaterials. She was the director of the GdR META.