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Seven faculty members at the University of Tennessee, Knoxville, are included on the 2021 list of highly cited researchers from Clarivate. Three of the UT researchers were recognized for their performance across fields beyond their primary disciplines.

Deborah Crawford

“The accomplishments of these renowned faculty members demonstrate the high quality of UT’s research enterprise and our pervasive impact on the global science and engineering community,” said Deb Crawford, vice chancellor for research, innovation and economic development.

Each year, Clarivate compiles a list of influential science and engineering researchers with multiple publications that have been highly cited, either in their principal field or across multiple fields. Individuals are identified from publications that rank in the top 1 percent by citations for a field (or fields) and publication year in the Web of Science citation index.

UT researchers recognized in 2021 are:

  • Richard Norby, adjunct professor in the Department of Ecology and Evolutionary Biology and the Bredesen Center for Interdisciplinary Research and Graduate Education, whose work investigates the effects of carbon dioxide enrichment on tree growth and forest metabolism, and ecosystem responses to atmospheric climate change. Norby was also recognized in 2020.
  • David Mandrus, the Jerry and Kay Henry Endowed Professor of Materials Science and Engineering, whose work focuses on growth, discovery, and materials physics of new electronic and magnetic materials. Mandrus was also among the 2020 honorees.
  • Stephen Pennycook, adjunct professor of materials science and engineering, whose primary research interest is the study of materials through the use of Z-contrast scanning transmission electron microscopy.
  • Arthur Ragauskas, professor of chemical and biomolecular engineering and UT–Oak Ridge National Laboratory Governor’s Chair for Biorefining, whose research focuses on understanding and exploiting innovative sustainable bioresources.
  • Sheng Dai, professor of chemistry at UT and scientist at ORNL, whose work centers around the synthesis and characterization of functional materials for energy-related applications.
  • Easo George, UT–ORNL Governor’s Chair for Advanced Alloy Theory and Development and a scientist at ORNL, whose research areas include high-entropy alloys, environmental effects of microstructure and mechanical properties, and the use of precious metals for space power applications.
  • Jiaqiang Yan, associate professor of materials science and engineering at UT and scientist at ORNL, whose research focuses on the design, growth, and characterization of novel materials with unusual electrical, magnetic, or thermal properties.

Around 6,600 researchers were selected for the 2021 list based on their citation rankings between 2010 and 2020.


Erin Chapin (865-974-2187,

Lindsey Owen (865-974-6375,