The Research Training Group GRK 2250 addresses and comprises different research fields with high relevance for the international engineering and research communities. This implies the necessity of a constant communication and exchange with leading national and international academic and research institutions. As part of the GRK 2250 research program and curriculum, international top scientists from various relevant fields of expertize are involved in the project. The experts are invited to attend the yearly organized workshops and summer schools in which they provide their opinions on the research work presented as well as deliver lectures and consultations. Upon agreement, they can take over the co-supervision of some GRK doctoral researchers and/or host them at their institutions in the framework of a research visit.