- Assistant Professor, University of Notre Dame
- Postdoctoral Fellow, Harvard University
- Ph.D. in Theoretical Chemistry, University of California, Berkeley
- B.S. in Chemistry, B.S. in Mathematics, University of Chicago
- Norman H. Nachtrieb Award, University of Chicago
- Pfizer Undergraduate Research Fellow
Within a little more than 50 years, our ability to calculate properties of molecular systems using only the fundamental physics governing them has grown from computational art into a often predictive tool. Molecular geometries and the thermodynamics of chemical reactions can be accurately computed using electronic structure. Beyond static properties many of the approximations which make ground state electronic structure robust no longer hold. Errors in excited state energies are on the same order of magnitude as the energies themselves and correlate poorly with the realities of experiments. Trajectories of electronic dynamics: the motions of electrons and ions in batteries and photovoltaics, are currently too expensive to compute for most timescales of interest. The goal of my group is to provide physical models and computational tools to make modeling electronic dynamics more routine and predictive. This involves running simulations of energy materials, recognizing the shortcomings of those simulations, doing the pencil & paper physics to improve the model and realizing that model in computer code.
- Nguyen, T.S.; Parkhill, J.A. "Nonradiative Relaxation in Real-time Electronic Dynamics OSCF2: Organolead Triiodid Perovskite." J. Phys. Chem. A 2016, just accepted.
- Nguyen, T.S.; Koh, J.H.; Lefelhocz, S.; Parkhill, J.A. "Black-Box, Real-Time Simulations of Transient Absorption Spectroscopy." J. Phys. Chem. Lett. 2016, 7(8), 1590-1595.
- Yao, K; Parkhill, J.A. "Kinetic Energy of Hydrocarbons as a Function of Electron Density and Convolutional Neural Networks." J. Chem. Theory Comput. 2016, 12(3), 1139-1147.
- Nguyen, T.S.; Parkhill, J.A. "Nonadiabatic Dynamics for Electrons at Second-Order: Real-Time TDDFT and OSCF2." J. Chem. Theory Comput. 2015, 11 (7), 2918-2924.
- Nguyen, T.S.; Nanguneri, R.; Parkhill, J.A. "How electronic dynamics with Pauli exclusion produces Fermi-Dirac statistics." J. Chem. Phys. 2015, 142, 134113.
- McClean, J.R.; Parkhill, J.A.; Aspuru-Guzika, A. "Feynman's clock, a new variational principle, and parallel-in-time quantum dynamics." P. Natl. Acad. Sci. USA 2013, 110 (41), E3901-3909.