Pleurosigma strigosum diatom frustule as a natural, multi-functional photonic platform Edoardo De Tommasi, Ilaria Rea, Maria Antonietta Ferrara, Luca De Stefano, Adil. Y. Al-Handal, Marija Stamenković and Angela Wulff EPJ Web Conf., 309 (2024) 04017 Published online: 31 October 2024 DOI: 10.1051/epjconf/202430904017