Belal Alnajjar received his B. Sc. with physics major degree from university of Damascus, Syria and M. Sc. degree under supervision of Prof. Bluhm at RWTH University, Aachen, Germany. Belal worked in the group of Prof. Blümich at Institut für Technische und Makromolekulare Chemie, Aachen, Germany. Since March 2018, he joined the Institute of Smart Sensors at the University of Stuttgart as a research assistant where he is working for his Ph.D degree under supervision of Prof. Anders. In his Ph.D research, Belal focuses on both theoretical and practical aspects of designing and building high precision sensors for NMR and ESR applications.