His research activity focuses on the experimental investigation of the structural and dynamic properties of supercooled liquids and glasses at the microscopic scale and on the microscopic description of their thermodynamic and transport properties (e.g., specific heat, elastic moduli, viscosity, thermal conductivity). His studies are mainly based on the development of novel, sophisticated experiments using X-ray synchrotron and free-electron-laser radiation. His main achievements include the observation of a strong scattering regime (Rayleigh scattering) of acoustic waves from microscopic density fluctuations in glasses, and the microscopic characterization of a quasi-local process universally found in supercooled liquids and glasses (Johari-Goldstein relaxation).

His research has been supported by grants from different international and national programs and foundations. He published 250 papers in peer-reviewed journals (total citations >10.000, H-index 57 from Google Scholar).