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.
• 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.
• 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.
• 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.
• 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.

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

Education record

Bachelor'S Degree, Applied Chemistry

Professional Development Studies, Electrical And Electronics Engineering