James Kazimierz Gimzewski is a Scottish physicist of Polish descent who pioneered research on electrical contacts with single atoms and molecules and light emission using scanning tunneling microscopy (STM).

Currently, he is a Professor in the Department of Chemistry and Biochemistry at UCLA, where he conducts research and advises graduate students in his PicoLab.

He is also the faculty director of the Nano & Pico Characterization core lab at the California NanoSystems Institute at UCLA.

[1][2] He pioneered research on electrical contact with single atoms and molecules, light emission and molecular imaging using STM.

With UCLA graduate student Andrew Pelling, Gimzewski published sonocytology's debut report in the August 2004 issue of Science magazine.