In the period from 20 to 23 March 2016, Karel was invited by professor Ingo Pinnau to KAUST (King Abdullah University for Science and Technology http://kaust.edu.sa/ )He introduced to the audience our work via lecture titled Advances in mixed matrix membranes for gas separation: Tunable tailor-made nanoparticles and ionic liquids. During a visit, he also met and right with each other colleagues from the Department (Klaus-Viktor Peinemann, Yu Han, Bader Ghanem and Naveen Khashab). His stay was short but very interesting.