Professor Gilchrist's research and scholarly activities are designed to impact both science and engineering through fundamental studies of particulate systems. From an engineering viewpoint, particle technology is ubiquitous, including pharmaceutical, chemical, agricultural, food, cosmetic, ceramic, electronic, and mining processes and in an uncountable number of natural processes including sediment transport in rivers, dune formation, and blood flow. An overarching objective of Gilchrist's research is to develop a better understanding of these far-from-equilibrium particulate processes exhibiting complexity and self-organization.
Gilchrist manages the Laboratory for Particle Mixing and Self-Organization, where he and his team investigate phenomena ranging from the nano- to macro- scales, typically divided into colloidal and granular systems. Researchers in the lab identify prototypical complex systems for study and develop new experimental, computational, and analytical methods of investigation and analysis. Projects include suspension transport in chaotic flows, suspension rheology and microstructure, convective deposition, granular dynamics in vibrated systems. Paired with this fundamental research is collaborative development of applications involving novel processes, materials, and devices such as microfluidic- and industrial-scale mixing and separation, light emitting diode and dye sensitized solar cell coating and internal structure fabrication, fabrication of BioMEMS sensor platforms, and dynamic powder density measurement for online process analysis. Much work has been performed in particle-laden coatings for industries spanning automotive and pharmaceutical coatingss. Most recently, he has worked on fabricating and manipulating field-responsive Janus particles. The long term goal of this work is to further fundamental understanding of suspensions and granular processes and to devise novel ways of controlling these systems.
Professor Gilchrist received his B.S. in Chemical Engineering from Washington University in St. Louis and Ph.D. from Northwestern University. Prior to joining the faculty of Lehigh University in 2004, he was a postdoctoral research associate in the Department of Materials Science and Engineering at University of Illinois working with Professor Jennifer A. Lewis (currently at Harvard University). He held Lehigh’s P.C. Rossin Assistant Professorship from 2007-2010 and the Class of 1961 Associate Professorship from 2013-2015, received the North American Mixing Forum Young Faculty Award in 2007. He was a visiting professor in the Department of Chemical Engineering at the California Institute of Technology for the 2011-2012 academic year, and a Visiting Professorial Fellow at University of New South Wales in 2016. Gilchrist received the 2024 PSRI Fluidization and Fluid Particle Systems Award from the Particle Technology Forum and the 2024 Experiential Learning Excellence Award from Lehigh's Rossin College of Engineering and is a Fellow of the American Institute of Chemical Engineers.
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