New Mechanism for Long Photo-Induced Enhanced Raman Spectroscopy in Au Nanoparticles Embedded in TiO2. - Brognara A; Bricchi BR; William L; Brinza O; Konstantakopoulou M; Bassi AL; Ghidelli M; Lidgi-Guigui N (Small (Weinheim an der Bergstrasse, Germany), 2022)