Growth of zinc dendrites during electrodposition

Phase-field modeling of electrodeposition
I recently constructed a phase-field model that accurately captures many of the observed features of electrodeposits. This will be a valuable tool for mitigating dendrite growth, particularly for pulsed charging. The model provides an estimate of the time at which the interface becomes unstable, and could be used to optimize the pulse time while still maintaining a flat interface. The video on the right shows a simulation of zinc dendrite growth. Read more…

Formation of {100} stripes in a LiFePO4 nanoparticle

Postdoctoral Associate, MIT Department of Chemical Engineering (2010-2012)
Supervisor: Martin Z. Bazant
I applied phase-field methods to electrochemical systems, with a focus on modeling lithium iron phosphate (LiFePO4), high-rate rechargeable battery material.  I studied the role of surface reactions and coherency strain during the intercalation process. Read more…

MIT Press Release: Revealing how a battery material works

Phase-field simulation of a kaleidoscopic spherulite

MIT Department of Materials Science & Engineering (2004-2010)
Thesis Advisor: W. Craig Carter
I developed a thermodynamic phase-field model for systems with an arbitrary number of components and phases, and used to the model to study microstructure evolution in ternary eutectics. Read more…

PhD Thesis (2010): A phase-field study of ternary multiphase microstructures
Masters Thesis (2006): Photonic Properties of New Dielectric Composite Geometries

Northwestern University Department of Materials Science & Engineering (2002-2004)
Advisors: Peter W. Voorhees, Katsuyo Thornton
I was first introduced to phase-field modeling as an undergrad at Northwestern, where I wrote phase-field simulations of quantum dot growth with anisotropic interfacial energy.  I also wrote software for rendering and calculating curvature of 3D dendrite reconstructions.