We welcome you to AMS25, the 11th International Summer School organized by Aristotle University of Thessaloniki and Texas A&M University. The past ten (July 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 and 2024) summer schools in the series were successfully conducted with the participation of more than 350 students from 20 different countries around the globe. The 11th consecutive AMS summer school is the outcome of the long international partnership between AUTH and TAMU/TEES, realized through the Center for R&D on Advanced Materials (CERDAM).