Julien Frougier

Julien Frougier: Engineering the Future at the Atomic Scale

Dr. Julien Frougier is a Senior Technology Development Engineer and Master Inventor at IBM Research, where he works at the forefront of Advanced Logic CMOS Technology for High-Performance Computing (HPC) and low-power applications. Specializing in Gate-All-Around (GAA) NanoSheet transistors—structures engineered at nearly atomic dimensions—Julien has helped extend Moore’s Law by pushing semiconductor scaling beyond the FinFET era through fundamental contributions to the development of NanoSheet technology, culminating in the demonstration of the world’s first 2-nanometer chip in 2021.

With a background spanning materials science, condensed matter physics, and advanced semiconductor engineering, Julien combines deep scientific expertise with a passion for practical innovation.

At IBM Research in Albany, New York, Julien has become known for navigating some of the semiconductor industry’s most complex engineering challenges in the advanced integration of three-dimensional logic and memory architectures. With a portfolio of over 440 filed patents, his innovations span contributions to advanced CMOS technologies (Fin-FET, NanoSheet-FET, Stacked-FET, Back-Side Power Delivery Network), memory technologies (STT-MRAM, SOT-MRAM, Ferroelectric-RAM), and beyond-CMOS concepts (2D-FET, Spin-FET, Spin-Lasers) that continue to redefine the limits of performance, power efficiency, and scaling.

While most people encounter semiconductors only through the devices in their pockets, Julien works several orders of magnitude smaller—engineering the technologies you’ll never see, but will use every day. At the frontier of nanoscale innovation, his work is helping to redefine the limits of semiconductor technology and to shape a future where computing becomes smaller, faster, and more energy-efficient than ever before.