Dr. Alan Owens holds an undergraduate honours degree in physics and physical electronics and earned his doctorate in astrophysics from the University of Durham, United Kingdom. He spent over 35 years engaged in the design and construction of novel detection systems for X- and gamma-ray astronomy, mostly as a staff physicist at the European Space Agency's European Space Research and Technology Centre (ESTEC) in the Netherlands and presently as a Senior Advisor at the Institute of Experimental and Applied Physics in Prague in the Czech Republic. Dr. Owens has previously authored Compound Semiconductor Radiation Detector (CRC Press, 2012). He also holds an honorary senior lectureship in space science at the University of Leicester, United Kingdom. Dr. Owens is currently involved in the development and exploitation of new technologies for space applications. Much of this work revolves around compound semiconductors for radiation detection and measurement, which by its very nature involves materials and systems at a low maturity level. Consequently, he has been involved in all aspects of a systematic and long-term program on material assessment, production, processing, detector fabrication and characterization for a large number of compound semiconductors.