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About

Zhile Chen is a pioneering figure in semiconductor metrology and mask inspection, best known for his foundational work on electron-beam inspection systems for advanced lithography. His most cited paper, "An electron-beam inspection system for x-ray mask production" (1991, 14 citations), introduced SEMSpec, a scanning electron-beam system that achieved high-resolution die-to-die inspections of conductive x-ray masks, wafer prints, and stencil masks. This work demonstrated remarkable sensitivity—detecting 97% of 50-nm defects at a rate of 27 minutes per square centimeter—setting a benchmark for production-scale defect detection. Chen’s contributions lie at the intersection of nanofabrication and quality control, enabling the reliable manufacture of masks critical for next-generation semiconductor devices. His research has influenced subsequent developments in e-beam inspection tools, which remain essential for identifying sub-micron defects in high-volume manufacturing. By combining precision engineering with practical throughput, Chen’s work has had lasting impact on the semiconductor industry, particularly in the transition to x-ray and stencil mask technologies. For students and researchers, his legacy underscores the importance of integrating sensitivity and speed in metrology systems.