Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: an overview oleh Krushynska Anastasiia O., Torrent Daniel, Aragón Alejandro M., Ardito Raffaele, Bilal Osama R., Bonello Bernard, Bosia Federico, Chen Yi, Christensen Johan, Colombi Andrea, Cummer Steven A., Djafari-Rouhani Bahram, Fraternali Fernando, Galich Pavel I., Garcia Pedro David, Groby Jean-Philippe, Guenneau Sebastien, Haberman Michael R., Hussein Mahmoud I., Janbaz Shahram, Jiménez Noé, Khelif Abdelkrim, Laude Vincent, Mirzaali Mohammad J., Packo Pawel, Palermo Antonio, Pennec Yan, Picó Rubén, López María Rosendo, Rudykh Stephan, Serra-Garcia Marc, Sotomayor Torres Clivia M., Starkey Timothy A., Tournat Vincent, Wright Oliver B.