Professor Louis E. Brus (1943-2026)

Professor Louis E. Brus

1943–2026

Columbia University mourns the passing and celebrates the extraordinary life of Professor Louis E. Brus, a distinguished member of the Department of Chemistry and a towering figure in modern science.

Professor Brus's pioneering work led to the discovery of semiconductor nanocrystals in colloidal solutions, known as quantum dots, a breakthrough which launched one of the most vibrant research fields in chemistry, physics, and engineering over the past four decades, for which he was awarded the Nobel Prize in Chemistry in 2023. His discoveries fundamentally transformed our understanding of nanoscale materials and opened new frontiers in fields ranging from biological imaging to quantum computing and solar energy.

Professor Brus's profound impact on science was recognized with numerous prestigious honors, including the Nobel Prize in Chemistry (2023), Inaugural Kavli Prize in Nanoscience (2008), Welch Foundation Award in Chemistry (2013), National Medal of Science (2013), election to the National Academy of Sciences (2004), and election to the National Academy of Inventors just last year.

Born in 1943 in Cleveland, Ohio, Louis Brus attended Rice University on a U.S. Navy ROTC scholarship and was commissioned as an officer upon graduation. He postponed his naval service to pursue graduate studies at Columbia University, where he earned his Ph.D. in chemical physics in 1969 under the mentorship of Professor Richard Bersohn. Following his doctorate, he served on active duty at the U.S. Naval Research Laboratory in Washington, D.C.

In 1972, Brus joined AT&T Bell Laboratories in the materials research division, where he spent more than two decades conducting groundbreaking research. He credited Bell Labs with providing the intellectual freedom and support that enabled his small team's revolutionary work on quantum dots.

In 1996, Professor Brus returned to Columbia, joining the faculty of the Department of Chemistry where he would spend the remainder of his distinguished career. He served as the Samuel Latham Mitchill Professor of Chemistry and Professor of Chemical Engineering, mentoring generations of students and postdoctoral researchers. Even after his formal retirement, he remained an active presence in the department, continuing to work with students and collaborate with colleagues.

Beyond his scientific brilliance, Lou was beloved by all who knew him for his warmth, generosity, intellectual curiosity, and unwavering support of young scientists. He was a cherished colleague, friend, and mentor whose kindness and wisdom touched countless lives in our community.

Professor Brus's legacy lives on through his transformative scientific contributions and the students and colleagues he supported and inspired.