Lei Yu Email & Phone Number

California, United States

Milpitas, California, Us

• Support production and field issue escalations, drive failure analysis and corrective action to ensure quality and reliability for KLA products • Design manufacturing processes in area of contamination control and cleanliness for next generation light source development • Work with internal cross-functional teams and external vendors to develop manufacturing processes and drive cost and cycle time reduction for high volume production

Wilmington, Ma, Us

• Enhance quality and yield of analog/mixed-signal integrated circuit products with application in power management, data communication, automotive etc., through root cause investigations including data mining, circuit analysis, electrical and physical failure analysis• Drive cross-functional collaboration with teams of design, test, apps, process, packaging, and external foundries to identify and implement corrective actions.• Identify systemic reliability issues for automotive customer returns, improve quality by optimizing test conditions and driving internal/external fabs for process changes

Berkeley, Ca, Us

• Led an industry research project on failure analysis of hard drive composite (metal alloy and oxides) at high temperatures in a various gas environment (vacuum, oxygen, hydrogen, and helium) through environmental TEM, proposed alternative material growth method to increase its stability，independently designing test experiments, and delivering technical written and oral reports • Studied the nucleation and growth mechanism of Cobalt-Manganese-Oxide nanoparticles (NPs) with spinel structure via EELS assisted in situ liquid TEM, leading to a fundamental understanding of binary metal oxide NPs growth. • Maintaining and troubleshooting TEM (JEOL 2100), training and supervising new users in the operation at the Material Science Division • Designed and built the high vacuum system for liquid cell TEM sample leak checking at National Center for Electron Microscopy (NCEM)

Oak Ridge, Tn, Us

• Investigated phase transition mechanisms for metal oxide nanowires through in situ (S)TEM, combined with EDS, SAED, EELS, and atomic-resolution imaging analysis • Fabricated spinel nanostructures of metal oxide using in situ TEM

Lexington, Ky, Us

• Investigated dissolution behavior of tin dioxide nanowires through in situ TEM heating• Invented an etching method to create negative metal oxide nanowire arrays via solid-liquid-vapor etching in ultra high vacuum• Designed a new and simple ceramic synthesis route for manganese containing spinel nanowires (characterized by XRD, XPS, SEM, and HRTEM) through hydrothermal and solid state reactions. Tested nanowires as excellent catalysts for oxygen evolution reaction • Fabricated high quality single crystalline tin dioxide thin films through PLD assisted growth and nanowires (Si, FeOOH, Fe2O3, Fe3O4, ZnO, SnO2, MnO2, MnOOH, CuMn2O4, MgMn2O4 etc.) via E-beam evaporation, CVD and hydrothermal methods

Doctor Of Philosophy (Ph.D.), Inorganic Chemistry, Material Science

Education record

Bachelor'S Degree, Applied Chemistry

Professional Development Studies, Electrical And Electronics Engineering