Inside Ruhr University Bochum's largest research partnership: University of Duisburg-Essen

Behind Ruhr University Bochum's research output sits a defining relationship: 1,057 co-authored works with University of Duisburg-Essen (Germany) in the five years to 2025, the university's single largest collaboration.

It anchors an unusually connected research base: 1,070 collaborating institutions across 78 countries, producing 31,700 joint works over the window, with international co-authors on 40% of output.

The collaborative work travels: its field-weighted citation impact stands at 2.61, where the world average is 1.0.

The Research Collaboration Index, the first global account of how universities actually collaborate, publishes its first full edition on Tuesday 15 September at 09:00 UK.

Every figure derives from the open global research record and is checkable at source.