Smallest QR code

The smallest QR code is 5.38 μm², and was achieved by Lukas Schulte, Prof. Dr. Carsten Schuck, Tim Buskasper and David Lemli (all Germany), in Münster, Germany, on 13 June 2024.

As part of a research group led by Prof. Dr. Carsten Schuck at the Department of Quantum Technology at the University of Münster, Prof. Dr. Carsten Schuck, Tim Buskasper, David Lemli, and Lukas Schulte attempted this record with the aim of drawing attention to the lectures and the practical courses on the basics of nanofabrication, specially designed for Master's students of physics. Their goal is to promote interest and fascination for physics, especially among the younger generation.

Fun fact: Their QR code is seven times smaller than that of a human red blood cell when viewed directly from the front.