Rohit D. Chavan (PDF)– left for Light Technology Institute (KIT), Germany
Apurba Mahapatra (PDF)– left for Marie Skłodowska-Curie Actions Postdoctoral Fellow, Technische Universität Dresden, Germany
Silver H. T. Cruz (PDF)- left for Universitat de València, Spain
Joanna Kruszyńska (PhD)- left for the company, Poland