Theodoros Samaras was born in 1968, in Xanthi, a small town in the northeastern part of Greece. In 1986 he began with his University studies at the Aristotle University of Thessaloniki, in the Department of Physics, from which he graduated in 1990. He continued his studies at the University of Surrey, where he was awarded (with Distinction) the MSc in Medical Physics in 1991. He, then, returned to Greece, where he started working towards a PhD degree at the RadioCommunications Laboratory of the Aristotle University. The subject of his thesis was the development of a new focusing technique for microwave hyperthermia. Having finished his PhD, in spring 1996, he joined the Greek Army for his 18-month military service.
From March 1998 to January 1999 he worked at the Laboratory for EMF and Microwave Electronics of the Swiss Federal Institute of Technology in the BIOEM/EMC group of Dr. Niels Kuster. He was involved mainly with studying the temperature increase due to the absorption of electromagnetic energy in materials and the effect of heat diffusion in electromagnetic dosimetry. In February 1999 he joined the Hyperthermia Unit of the University Hospital Rotterdam - Daniel to conduct research with a Marie Curie Fellowship from the European Commission. The aim of the project, under the guidance of Dr. Gerard van Rhoon, was the modeling of applicators used for superficial hyperthermia, in an attempt to improve treatment quality. In December 1999 he joined the RadioCommunications Laboratory, where he is currently working as a Professor.