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Bios September 8, 2021

Judy Rui Zhu

Principal Scientist, Advanced Imaging

Judy Rui Zhu, Ph.D., is a principal scientist in SRI International’s Advanced Imaging group. During her SRI tenure, she has led imager design, set up the imager process at various foundries, led ultrathin silicon-on-insulator (UTSOI) backside-illuminated (BSI) imager process development, and imager characterizations.

Zhu has worked on multiple charge-coupled device (CCD) imagers, including Electron Multiplying CCD (EMCCD) imagers used widely in florescence microscopy where extremely low noise (<1 e) is required; high-speed time-delayed integration (TDI) CCD imagers, which found applications in space and ground surveillance, machine vision and inspection, and medical fields (high-speed flow cytometry); and high-speed split-frame and full-frame transfer CCD area arrays for high-speed (>1500 fps) hyperspectral imaging used in atmospheric and water pollution study.

Zhu has also worked on complementary metal–oxide–semiconductor (CMOS) imager designs; particularly CMOS imager architecture, pixel design, and process development. She has developed and established a CMOS pixel design and process in a CMOS foundry, and worked on CMOS imagers including a low noise and high dynamic range CMOS imager for night vision applications, CMOS staring array for star tracking, and large format high dynamic range CMOS imagers.

Prior to joining SRI, Zhu worked on InGaAs PIN and APD photodetector design, process development, and characterization for the telecommunication industry. She is an inventor or co-inventor of five U.S. patents in the imaging field.

Zhu received a B.S. degree in physics from Tsinghua University of P. R. China and a Ph.D. in electrical engineering from Purdue University.

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