Materials Scientist
Materials Scientist


Jonathan Evarts is a dedicated materials scientist at Pacific Northwest National Laboratory (PNNL), driven by a passion for exploring fundamental properties of novel materials. Jonathan's work primarily focuses on the innovative use of silicon carbide and glasses. His research includes developing hydrogen permeation models to enhance long-term storage solutions and advancing the technology for sustainable disposal of nuclear waste. His expertise encompasses a wide array of computational and analytical techniques, including density functional theory, x-ray diffraction, scanning electron microscopy, and Raman spectroscopy. Jonathan's contributions to the field are recognized by his active membership in the American Ceramics Society, where he collaborates with peers to push the boundaries of materials science research and application.

A proud alumnus of the Ohio State University, Jonathan holds both master's and bachelor's degrees in material science and engineering and is currently pursuing his doctorate at Washington State University.

Prior to his tenure at PNNL, Jonathan dedicated 12 years to Puget Sound Naval Shipyard, where he played a crucial role in defueling the U.S. Navy's nuclear fleet. His international experience includes a 3-year assignment in Yokosuka, Japan, where he supported the forward-deployed naval aircraft carrier, showcasing his adaptability and commitment to critical defense infrastructure.

Outside his professional endeavors, Jonathan enjoys outdoor activities like hiking, climbing, and bike touring. His commitment to community service is evident from his 10 years with the Olympic Mountain Rescue Team and his role as a math tutor for Team Battelle. Jonathan also values family engagement and participates as a Watchdog Dad at his children's school. He resides with his wife and four children, cherishing the balance between his professional and personal life.

Disciplines and Skills

  • Computational materials science
  • Density functional theory
  • Materials characterization
  • Powder x-ray diffraction
  • Scanning electron microscopy
  • Actinide chemistry
  • Glass science
  • Waste form development


  • Master of Science, materials science and engineering, the Ohio State University
  • Bachelor of Science, materials science and engineering, the Ohio State University

Affiliations and Professional Service

  • American Ceramic Society



  • Evarts, J. S., S. Chong, J. M. Oshiro, B. J. Riley, R. M. Asmussen, and J. S. McCloy. 2024. "Ceramic-metal (cermet) composites: A review of key properties and synthesis methods focused on nuclear waste immobilization." Industrial and Engineering Chemistry Research 63 (14): 60036023. PNNL-SA-191155.