Koester was originally named to the NAI's class of 2024 — recognizing contributions during his time directing the Minnesota Nano Center and serving as the University of Minnesota's first Chief Semiconductor Officer. He holds 85 U.S. patents in semiconductor technology and nanomaterial-based sensors.

“Technologies at the nanoscale offer extraordinary opportunities—as well as complex challenges,” said Patricia J. Culligan, the Matthew H. McCloskey Dean of Engineering and professor of civil and environmental engineering and earth sciences at the University of Notre Dame.

“Steve Koester brings both extraordinary research expertise in nanomaterials and a track record of proven and visionary leadership. Notre Dame is fortunate to have someone of Steve’s caliber to build on NDnano’s strong foundation and shape its next chapter of innovation and positive societal impact.”

Koester’s research focuses on novel electronic, photonic, spintronic, and sensing device concepts, particularly those using 2D materials. He has authored or co-authored over 300 technical publications and conference presentations, 7 volumes, 4 book chapters, and holds 80 United States patents. He is a fellow of the IEEE, Optica, and the National Academy of Inventors.

As a leading researcher and professor in nano-science and technology, Koester previously served as Russell J. Penrose Professor of Nanotechnology, director of the Minnesota Nano Center, and chief semiconductor officer at the University of Minnesota (UMN).

“Prof. Koester’s deep expertise in novel materials for electrical, optical, and sensing systems, coupled with his administrative acumen, will enable NDnano to continue its strong track record of basic research advancements in science and engineering, while simultaneously having practical impact on the global semiconductor industry,” said Jeffrey Rhoads, vice president for research at the University of Notre Dame and professor of aerospace and mechanical engineering.

Koester will be NDnano’s fourth director, following Alan Seabaugh (2018-2024), professor emeritus in the Department of Electrical Engineering, Wolfgang Porod (2001-2018), Frank M. Freimann Professor of Electrical and Computer Engineering, and founding director Gerald Iafrate (1999-2001).

Koester received his bachelor’s and master’s degrees in electrical engineering from the University of Notre Dame, and his Ph.D. from the University of California, Santa Barbara.

“I was first introduced to nanotechnology during my time as an engineering undergraduate at Notre Dame—it’s been my passion ever since,” said Koester. “I’m thrilled to be rejoining my alma mater after 34 years.”

Koester will assume his position on July 1.

Notre Dame Nanoscience and Technology (NDnano) promotes collaborative research in science and engineering to address unsolved scientific and technical questions with an aim to promote the greater good. Advances in imaging and characterization, multi-physics modeling, synthesis, growth, and nanofabrication are enabling breakthroughs in all science and engineering disciplines. NDnano is where Notre Dame faculty, researchers, and students meet to broaden understanding, discuss multidisciplinary research opportunities, and shape future research directions. Learn more at nano.nd.edu.

Originally published by Karla Cruise at research.nd.edu on April 08, 2025.