Infrared nanospectroscopy study of the light-induced conformational changes of Channelrhodopsin Maria Eleonora Temperini, Raffaella Polito, Antonia Intze, Ulrich Schade, Ljljana Puskar, Eglof Ritter, Leonetta Baldassarre, Michele Ortolani and Valeria Giliberti EPJ Web Conf., 255 (2021) 13001 Published online: 18 November 2021 DOI: 10.1051/epjconf/202125513001