Experience

Imperial Machine & Tool Co.

• United States
• Defense and Space Manufacturing
• 1 - 100 Employee

• Chief Technologist and Director of Additive Manufacturing

  • Jun 2017 - Present

  Oversight and management of Additive Manufacturing division. Responsible for production of 3D printed metal components, including technical assessment of customer parts, computer file processing, equipment performance and build outcomes, interaction with subtractive manufacturing for any required machining/finishing operations, material management, capital equipment procurement, and division roadmap performance. Also focused on internal technology and development of products for key markets of interest (semiconductor, automotive, chemical and biochemical processing, high-temperature materials, other), leveraging Imperial's extensive experience and in-house capabilities in additive manufacturing, precision CNC machining, as well as a variety of other fabrication and test resources.



Valence Process Equipment, Inc.

• Chief Technology Officer

  • 2007 - May 2017

  Responsibilities include- developing innovative concepts and realizing novel designs for improved-performance GaAs, InP and GaN LED MOCVD reactor systems- overall design of high-volume production GaN LED MOCVD reactor systems- producing market-competitive MOCVD-grown epitaxial materials supporting marketing objectives- direction of scientific technical staff and engineering teams- identifying designs and methods suitable for patent, producing patent applications and managing patents in-process- participating in and overseeing MOCVD system installation and epitaxial material prove-out at new customer sites- managing key component technology products and working with vendors on integration and product advancement- functional specification of MOCVD system operating software



Veeco Instruments

• Staff Scientist

  • Nov 2003 - Jan 2007

  - Responsible for CVD system and component specification, design, qualification and engineering release- Extensive hands-on experience in MOCVD system operation, troubleshooting and maintenance applied to product engineering for optimal performance, reliability and serviceability- Conducted GaN Blue LED material growth qualification runs for new MOCVD system design- Key member of “tiger team” which was tasked and succeeded with overall system redesign for improved manufacturability, reliability, serviceability, flexibility, profitability and ease of field installation.- Resolved multiple field performance and quality issues by applying sound investigative analysis of field data, hypothesis generation, in-house modified-component validation trials, and release of successful modified design- Experienced in MOCVD reactor facility installation, startup and material qualification- Achieved seamless integration of newly-qualified subcomponents by effective communication with mechanical, electrical and software engineering teams- Implemented CVD tool performance validation procedures, resulting in major improvements in product quality and field startup times



Emcore

• Staff Scientist

  • Oct 2000 - Oct 2003

  - Responsible for MOCVD process development and production of InGaAsP lasers, InGaAs/InP and InGaP/GaAs HBTs, InGaAs/InP PINs, and GaN LEDs- Performed process data and materials compositional analyses and conducted development runs for the epiwafer production group- Experienced in specification of process gases, gas purification, metalorganic sources and substrate wafers



UCLA School of Engineering

• Graduate Student Researcher

  • Oct 1996 - Sep 2000

  - Conducted original research in the site-specific surface chemistry and engineering of epitaxially-grown III/V compound semiconductor materials (see publications list)- Upgraded and maintained MOCVD reactor and UHV surface analysis vacuum system (XPS, LEED, IR, RDS)