09.11.1965 born in Zwickau (East-Germany)
1972-1982 ten-year-general-polytechnical school
1982-1984 professional training as gas pipe fitter and welder
1984-1987 military service in Frankenberg
1987-1988 high-school course at the Bergakademie Freiberg
1988-1993 study of Crystallography at Leipzig University
Master's thesis on the application of the Kossel technique to Quasicrystals.
1994-1997 PhD. course at University of Tsukuba (Japan)
Doctor's thesis on the Structure analysis of Quasicrystals
1997/May-July temporary stay at NIRIM (Japan)
1997-1999 post doctorate at NIRIM (STA-Fellowship)
1999-2011 programmer at Materials Data, Inc. in California 
 

From 10/1999 till 03/2011 I worked as a scientific programmer at Materials Data, Inc. I have worked on applications related to XRD simulation & analysis, crystal structure graphics, ab-initio structure solution via direct methods and charge flipping, image processing of X-ray films and imaging plate data, XRD analysis of clay materials, various data bases, graphics programs and many unreleased tools.  

All the DOS-software and most of the JAVA-software on my website are hobby projects and have little or nothing to do with my actual work.

During my PhD. I worked on the structure analysis of quasicrystals under the supervision of Dr.Akiji Yamamoto. The title of my thesis is Application of the five-dimensional maximum entropy method to the structure refinement of decagonal Al-Mn-Pd quasicrystals. Our work deals with the structure solution of quasicrystals on the basis of single (quasi)crystal X-ray data. For this we use the higher-dimensional space approach. Quasicrystals which are aperiodic in three-dimensional space can be described as periodic "crystals" in a space of usually five or six dimensions. This means that we actually solve the higher-dimensional periodic structure, from which the real three-dimensional structure is obtained by some appropriate section algorithm.

Before coming to the US I was a STA Fellow (Science and Technology Agency) at NIRIM doing a postdoctorate. In cooperation with Dr.Akiji Yamamoto I was working on various software packages for applying an imaging plate Weissenberg camera to the data collection on quasicrystals (see my JAVA applications page)

Some of the software I created in my spare time are listed at www.jcrystal.com