Dag Winkler received his PhD in Physics at Chalmers in 1987, and spent two years as research associate at Yale University during 1988 and 1990. He became Docent in 1993 at Chalmers and Professor in 2000 at Gothenburg University. In 2003 he was appointed Professor in Physics at Chalmers University of Technology. His main research is tunneling in superconductors and superconducting electronics, such as SIS and HEB high frequency mixers, flux-flow oscillators, SQUIDs and applications at low level measurements. His current activities include intrinsic Josephson effects in single crystal Bi2212, the 2D electronic properties at interfaces between LaAl2O3 and SrTiO3, and high-Tc SQUIDs for MEG and MRI. He has long experience in microwave technology, low temperature physics, and cryogenic systems. Part time he worked at ABB Corporate Research on development of cryogenic high voltage cables and low-level measurements using superconducting electronics. From 1999 to 2003, he was also engaged at the Imego Institute (now Acreo), building up an activity on magnetic sensor systems and microwave technology. During 2006 to 2007 he was the head of the Quantum Device Physics Laboratory. Since June 1, 2007 he is head of the Department of Microtechnology and Nanoscience – MC2, at Chalmers University of Technology.