Inside École Polytechnique Fédérale de Lausanne's largest research partnership: ETH Zurich

Behind École Polytechnique Fédérale de Lausanne's research output sits a defining relationship: 1,857 co-authored works with ETH Zurich (Switzerland) in the five years to 2025, the university's single largest collaboration.

It anchors an unusually connected research base: 1,101 collaborating institutions across 78 countries, producing 39,160 joint works over the window, with international co-authors on 59% of output.

The collaborative work travels: its field-weighted citation impact stands at 3.42, 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.