Before enrolment you should have a PhD position at PTB or TU Braunschweig in physics, chemistry, biotechnology, electrical or mechanical engineering, mathematics, information science or other related fields.
You don't have a PhD position either at TU Braunschweig or PTB yet?
You can find their offers here
...and here
Your application should include
You may submit an application for enrolment at any time to igsm(at)tu-braunschweig.de