Prof. Dr. Friedrich Kremer, Universität Leipzig
Ehrenkolloquium zum 100. Geburtstag von Prof. Dr. Gerhard Klages (Institut für Physik, JGU)

The 100th anniversary of Prof. Dr. G. Klages offers a welcome chance to recapitulate the history of Broadband Dielectric Spectroscopy (BDS). At the beginning, it was by no means broadband but instead restricted to narrow spectral ranges. In its modern form, BDS covers typically 14 orders of magnitude in frequency from 10-4 Hz up to 1010 Hz at widely varying temperatures and has emerged as being useful in manifold areas of modern science. For topics like molecular dynamics in nanometric confinement, scaling of relaxation processes of glass-forming liquids and polymers, charge transport in electronic and ion-conducting materials, the scaling of electrode polarisation, to mention a few, BDS has made essential contributions. In modern technology and material science, e.g. organic electronics, fuel cells, Ionic Liquids or Liquid Crystals, it is an indispensable tool. In this talk, a flavour of these exciting developments will be presented and future developments discussed.