Microbubble resonators for photoacoustic and photothermal characterisation of nanoparticles suspensions Gabriele Frigenti, Lucia Cavigli, Fulvio Ratto, Sonia Centi, Tupak García-Fernández, Daniele Farnesi, Stefano Pelli, Gualtiero Nunzi Conti and Silvia Soria EPJ Web Conf., 309 (2024) 04014 Published online: 31 October 2024 DOI: 10.1051/epjconf/202430904014