Ricardo Lopez-Serrano
Aromas,CA
Summary
Professional technician with extensive hands-on experience in sample preparation for TEM imaging. Excellent troubleshooting, customer service and analytics skills coupled with more than 3 years of experience. Highly effective in complying with Lab IP requirements evidenced by zero sample losses. Broad skills in basic scanning electron microscopy (SEM)/Focused Ion Beam (FIB)/Transmission electron microscopy (TEM) principle.
Overview
10
10
years of professional experience
Work History
TEM Technician
Applied Materials
Sunnyvale, CA
08.2025 - Current
- Perform daily Transmission Electron Microscopy (TEM) analysis to support all BU process activities in Applied Materials.
- Operated metrology tools to help understand and identify all patterns of interest.
- Understand image quality requirement and sample/beam interaction to determine optimized condition.
- Obtained Bright Field, High resolution, diffraction patterns, dark field TEM and HAADF STEM images of different samples.
- Uploaded TEM data to the LIMS system.
- Interact with Bu engineers to understand their detail requirement, and communicate on results.
FIB Technician
Applied Materials
Sunnyvale, CA
08.2022 - 08.2025
- Prepared samples for experiments, including sample coating, wafer cleaving, mounting/un-mounting samples, and preparing jobs for experimentation to evaluate the performance of the process system.
- Prepared transmission electron microscope (TEM) lamella samples using focused ion beam (FIB), optimize sample preparation procedures and conditions, and identify cutting locations based on pattern instructions.
- Operated metrology tools in the FIB & TEM lab to understand cross-section or top-view critical dimensions (CD), identify patterns of interest, understand image quality requirements and sample/beam interactions to determine optimized conditions, and complete requested jobs under limited supervision after training.
- Help lab on monitoring wafer in process (WIP) and maintaining quality, turnaround time, and throughput.
- Collaborated with cross-functional teams to implement process improvements, reducing downtime and increasing productivity.
- Trained junior technicians on equipment operation and safety protocols, fostering a culture of continuous learning.
Parks and Recreation Worker
Santa Clara County Parks
San Jose, CA
04.2019 - 05.2022
- Collect vehicle entry, camping, use permit and other fees
- Complete weekly cash summaryProvide information on Parks promotions, brochures and passes and respond to questions from the public in person or by telephone
- Contact Park Personnel and County Communications using a 2-way radioMaintain security of radio, cash, materials and supplies
- Keep apprised of current rules and regulations as they apply to Parks facilities
- Plant, water, spray, and fertilize plants, trees, or lawns
- Assist higher level employees in construction and maintenance involving semi-skilled craft operations
Records Analyst
Gryphon Financial Group
Morgan Hill, CA
08.2019 - 02.2020
- Served Fortune 500 clients by requesting various forms of documentation for internal analysis
- Worked among teams to develop rapport with vendors over the phone and by email
- Extensive analysis, customer service and telephone responsibilities.
Sales and Service Associate
Hertz Rental Car Group
Gilroy, CA
02.2016 - 12.2017
- Provided outstanding customer service while professionally and effectively selling Hertz products and services to meet the customer’s travel and insurance replacements needs
- Achieved personal sales goals while supporting the goals of the team.
- Rented cars for personal use and insurance replacement both in person and via telephone.
Education
AA - Business Administration
Evergreen Valley College
San Jose, CASkills
- Microscopy proficiency
- Sample preparation
- Wafer cleaving
- Outstanding customer service
- Computer literacy
- Strong written and verbal communication
- Excellent critical thinking and problem-solving skills
- Attention to detail
- Works Well Under Pressure
Languages
Spanish
Native or Bilingual
Timeline
TEM Technician
Applied Materials
08.2025 - Current
FIB Technician
Applied Materials
08.2022 - 08.2025
Records Analyst
Gryphon Financial Group
08.2019 - 02.2020
Parks and Recreation Worker
Santa Clara County Parks
04.2019 - 05.2022
Sales and Service Associate
Hertz Rental Car Group
02.2016 - 12.2017
AA - Business Administration
Evergreen Valley College