Sineth Premarathna
Materials Scientist | Atomic-Scale Surface Science | STM & UHV Instrumentation | Oxide & Single-Atom Systems | Thin-Film Growth (PVD) | X-ray & Spectroscopy
- Role
- Postdoctoral Researcher at Pacific Northwest National Laboratory
- Location
- Richland, WA, US
- LinkedIn followers
- 500 followers
About Sineth Premarathna
I’m an experimental physicist working in thin films and surface science, currently at Pacific Northwest National Laboratory (PNNL) in collaboration with the University of Washington. My work focuses on designing and understanding thin film systems at the atomic scale, particularly how deposition conditions and defects influence structural and electronic properties. I have hands-on experience with PVD, sputtering, plasma processes, and UHV-based systems, and use techniques such as XPS, XRD, STM, synchrotron X-ray spectroscopy, and PPMS to connect processing conditions to material performance. Previously at Argonne National Laboratory, I worked on nanoscale molecular systems and molecular machines, studying electronic and magnetic properties using STM and synchrotron-based techniques. I’ve developed strong expertise in UHV instrumentation, cryogenic systems, and process development, along with Python- and MATLAB-based data analysis for experimental workflows. I enjoy solving complex experimental and instrumentation challenges, and I’m interested in roles in thin film R&D, coatings, and advanced materials development where I can apply data-driven approaches to real-world technologies.
Experience
Postdoctoral Researcher
Pacific Northwest National Laboratory
Jan 2026 — Present · Richland, WA, US
Education
Dharmasoka College, Ambalangoda
High School, Physical Sciences
2001 — 2009
Ohio University
Master of Science (MS), Physics
University of Colombo
Bachelor of Science, Physics
2010 — 2015
Ohio University
Doctor of Philosophy - PhD, Physics
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