The Dielectrics Group of the National Technical University of Athens (NTUA) in Greece, works with main focus on the study of the structure-property relationships in polymers and biopolymers. Research into this field has been proceeding for more than 30 years in Athens in close cooperation with several universities and research centers worldwide, in particular in Europe. The group has contributed to over 300 refereed journal papers and numerous conference contributions.
Dielectric techniques are employed to study local dynamics and charge transport in various materials. The techniques include broadband dielectric relaxation spectroscopy (DRS, 10-4 - 109 Hz), thermally stimulated depolarization currents (TSDC) techniques and measurements in the time domain (DC). In addition, thermal transitions, as well as mechanical and thermomechanical properties are investigated by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and mechanical tests. Polymer water interactions are intensively investigated in the group by using gravimetric water sorption/desorption measurements and by dielectric measurements at various levels of realative humidity/water content. Measurements related to biophysical analysis are also performed, mainly in the frames of DNA Damage and Repair Laboratory.