Heinrich Rohrer

Heinrich Rohrer
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Name	Heinrich Rohrer
Birth date	6 June 1933
Birth place	Buchs, St. Gallen
Death date	16 May 2013
Death place	Wengen, Canton of Bern
Nationality	Swiss
Fields	Physics, Solid-state physics, Surface science
Workplaces	IBM, Swiss Federal Institute of Technology Zurich, IBM Research – Zurich
Alma mater	Swiss Federal Institute of Technology Zurich
Known for	Co-invention of the Scanning tunneling microscope
Awards	Nobel Prize in Physics

Heinrich Rohrer was a Swiss physicist and co-inventor of the Scanning tunneling microscope whose work transformed surface science and nanotechnology. Rohrer’s developments at IBM Research – Zurich alongside collaborators bridged experimental techniques used in solid-state physics, materials science, and condensed matter physics. His career combined industrial research at IBM with academic ties to the Swiss Federal Institute of Technology Zurich and international engagement with institutions such as the Royal Society and the National Academy of Sciences.

Early life and education

Rohrer was born in Buchs, St. Gallen, into a family from the Canton of Aargau and grew up in the milieu of post‑war Switzerland. He completed secondary schooling near Zurich and enrolled at the Swiss Federal Institute of Technology Zurich (ETH Zurich), where he studied physics under professors linked to the traditions of Felix Bloch and Wolfgang Pauli. At ETH Zurich he completed a diploma and a doctoral thesis in experimental solid-state physics supervised by faculty associated with the laboratory networks that included Paul Scherrer Institute researchers and contacts to Max Planck Society laboratories. Early associations during his education connected him with contemporaries from institutions such as University of Zurich, University of Cambridge, and Bell Labs researchers visiting ETH.

Scientific career and inventions

Rohrer joined IBM Research – Zurich in the late 1950s, entering a research environment shared with figures from IBM history such as Leo Esaki and influenced by prior work at Bell Labs and General Electric. At IBM Zurich he collaborated with Gerd Binnig and teams drawing on techniques from quantum mechanics-informed tunneling theory originally advanced by Ian Fowler and experimental approaches related to field emission studies by Erwin Müller. The group developed the Scanning tunneling microscope (STM) in the 1980s, a device that exploits the quantum mechanical phenomenon of electron tunneling between a sharp tip and a conducting surface—an idea rooted in the theoretical groundwork of Brian Josephson and experimental foundations from Ralph H. Fowler-era concepts. The STM enabled imaging and manipulation of individual atoms on surfaces such as silicon, copper, and graphite, impacting research in surface chemistry, catalysis, and nanofabrication. Rohrer's work led to subsequent techniques like the atomic force microscope pioneered by Gerd Binnig and Calvin Quate inspirations, and influenced instrumentation at facilities such as the European Synchrotron Radiation Facility and the National Institute of Standards and Technology.

Nobel Prize and awards

For the invention of the STM, Rohrer shared the Nobel Prize in Physics in 1986 with Gerd Binnig; the prize recognized advances that revolutionized surface science and experimental solid-state physics. The award complemented other honors from bodies including the Swiss Academy of Sciences, the Royal Swedish Academy of Sciences, and honorary degrees from institutions such as University of Geneva and Technical University of Munich. Rohrer also received medals and prizes from organizations like the Wolf Prize committee-affiliated committees, scientific societies connected to the American Physical Society, and European research academies including the European Molecular Biology Organization—acknowledgments that underscored cross-disciplinary impact spanning materials science and chemistry.

Later career and academic positions

After the Nobel recognition, Rohrer continued at IBM Research – Zurich in leadership and advisory roles while maintaining affiliations with ETH Zurich as a lecturer and visiting professor. He engaged with initiatives at international research centers such as CERN, the Max Planck Society institutes, and participated in policy and advisory boards linked to the European Union research framework and the Swiss National Science Foundation. Rohrer served on committees for research infrastructure at institutions like the Paul Scherrer Institute and contributed to collaborative projects with universities including University of Basel, University of Cambridge, and Massachusetts Institute of Technology researchers. In later decades he promoted outreach and international cooperation, interacting with figures from the Royal Society and contributing to symposia alongside laureates from Niels Bohr Institute and Institut Laue–Langevin.

Personal life and legacy

Rohrer lived in Switzerland, often spending time in the Bernese Oberland near Wengen, and maintained personal connections with colleagues from IBM, ETH alumni networks, and international academies such as the National Academy of Sciences and the Academia Europaea. His legacy includes the widespread adoption of scanning probe techniques across laboratories at institutions like Stanford University, the Weizmann Institute of Science, and the University of Tokyo, the training of generations of experimentalists affiliated with IBM Research – Zurich and ETH Zurich, and the spawning of commercial instruments from startups and manufacturers collaborating with Agilent Technologies and Bruker. Monographs, review articles, and museum exhibits at places like the Science Museum, London and the Deutsches Museum preserve Rohrer's contributions to nanotechnology and surface science, while his name endures in historical accounts of 20th-century physics alongside contemporaries such as Richard Feynman, Kenichi Fukui, and Mikhail Prokhorov.

Category:Swiss physicists Category:Nobel laureates in Physics Category:ETH Zurich alumni