1. Sylvia E. Sohn
3535 Sheffield Manor Terr. Silver Spring, MD 20904  Cell: 443-857-9356  sylviasohn@gmail.com
PROCESS ENGINEER
Process Development & Improvement/ Microfabrication/ Six Sigma
EXPERTISE
 Hands-on knowledge of cleanroom microelectronics
fabrication processes (photolithography, metalization, wet/
plasma etch, wafer cleaning/ preparation, etc)
 Materials & surface analytical techniques (SEM, EDS, AFM)
 Electronics tests (I-V profile)
 Design of Experiments (DOE)
 Statistical Process Controls (SPC)
 Lean Quality Tools (FMEA, Pareto
Charts, Fishbone Diagrams, Six Sigma)
 Lean Six Sigma Master Black Belt
PROFESSIONAL EXPERIENCE
EPITAXIAL TECHNOLOGIES, LLC – Columbia, MD
Manufacturer of ultra-high sensitive optoelectronics for defense and telecommunications industries
Clean Room Process Engineer, 2014 to Present
Fabricate APD Laser Warning Receiver (LWR) wafer chips using photolithography, deposition, etch, and other
processes related to III-V wafer fabrication. Design, execute, and analyze experiments using DOE to solve
process problems, simplify procedures, and improve yield. Perform electronic tests of APD devices at multiple
process stages. Analyze light-response characteristics and report to MBE growth engineer. Conduct failure
analysis on devices with SEM, EDS, and AFM.
Key Contributions and Initiatives:
 Championed innovative solutions to reliable and repeatable device test set-up.
 Incorporated Six-Sigma methodologies to solve a range of process problems.
 Standardized and documented fabrication procedure to be used as technical training reference.
JOHNS HOPKINS UNVERISITY FRECHETTE LAB – Baltimore, MD
Researcher, 2008 to 2011
Researched a novel microfluidics separation system with nanowires, fabricated by photolithography, metal
deposition and electroplating.
COLGATE-PALMOLIVE TECHNOLOGY CENTER – Piscataway, NJ
Research Intern, 2009
Investigated correlations between toothpaste abrasives and tooth enamel erosion after acid consumption.
EDUCATION  CREDENTIALS
 MS, Chemical and Biomolecular Engineering (2012) The Johns Hopkins University – Baltimore, MD
 BS, Chemical and Biomolecular Engineering (2010) The Johns Hopkins University – Baltimore, MD
o Concentration in Interfaces and Nanotechnology
 Lean Six Sigma Master Black Belt, 2014
PUBLICATION  PRESENTATION
 Balvin, Sohn, et al., Directional Locking and the Role of Irreversible Interactions in Deterministic
Hydrodynamics Separations in Microfluidic Devices, Physical Review Letters, Vol. 103(7), August 2009.
 Exhibitor at 2010 USA Science & Engineering Festival, Washington DC.
HONORS  AWARDS

2.  Technology Fellowship Grant, Center for Educational Resources, 2011
 Undergraduate Research Award, Whiting School of Engineering, 2010