UPCON 2026 (Brno, Czech Republic) 5th Conference on Properties, Design, and Applications of Upconversion Nanomaterials REGISTRATIONRegistration is now open!!!Students (bachelor/master/PhD): 300 Euros until 31 January 2026; 400 Euros after 31 January 2026CLICK HERE FOR STUDENT REGISTRATIONNon-Students (everyone else): 450 Euros until 31 January 2026; 550 Euros after 31 January 2026CLICK HERE FOR NON-STUDENT REGISTRATION