About us: We are a team of chemists,
physicists, and biologists developing theoretical and computational methods for
applications that range from the complex chemical processes of combustion to
the molecular mechanisms of mixing liquids.
Interested in joining us?
Research interests: Much of our research involves problems
related to the transport of matter and energy and how these macroscopic
phenomena emerge from the microscopic behavior of molecules. We are
particularly interested in the fundamental dynamical processes of complex
systems far from thermodynamic equilibrium. Our basic tools include
nonequilibrium statistical mechanics, dynamical systems, information theory,
and molecular simulations.
If you are interested in our
research, contact Professor Green at jason dot green at umb dot edu. We have openings
students and postdoctoral researchers.
Principal investigator: Professor Jason R. Green
Dr. Mohammad Alaghemandi - postdoctoral researcher
Helen Cuiyun Zhao - Ph.D. student
Lucas Newcomb - Ph.D. student
Shane Flynn - Oracle Fellow - B.S. anticipated 2015
Jonathan Nichols - Oracle Fellow - B.S. anticipated 2015
Will Fatherley - Beacon Fellow - B.S. anticipated 2015
Fluctuating and disordered rate processes
Kinetics provides predictions about how fast a
particular process will happen - its rate. For example, predicting the
rate of making and breaking hydrogen bonds in liquid water can give
insight into the role of this process in the function of biomolecules.
Many such processes present a theoretical challenge to kinetics because
of the intrinsic fluctuations in the rate caused by the surrounding
environment; the interaction between two water molecules sensitively
depends on the proximity, geometry, and behavior of the water molecules
surrounding them. We are designing a general theoretical framework that
applies to this broad class of rate processes, including water. This
framework is being implemented as a computational algorithm to analyze
the results of both computer simulations and laboratory
Measuring disorder in irreversible decay processes
S.W. Flynn, H.C. Zhao, J.R. Green, J. Chem. Phys. 2014 141(10), p. 104107.
Order and disorder in irreversible decay processes
J.W. Nichols, S.W. Flynn, J.R. Green, J. Chem. Phys. 2015 142(6), p. 064113.
Statistical dynamics of mixing liquids
Natural phenomena mix matter, energy or both.
The mixing of liquids is especially important; it is responsible for
the molecular structure and function of biological cells, the
production and processing of everyday products, and the yield of
chemical reactions. For liquids that are sufficiently alike,
thermodynamics makes predictions about whether the liquids will mix.
However, the entropy associated with the interdiffusion of liquids is
difficult to estimate, say, from molecular simulations, especially if
the liquids are dissimilar or the mixing requires heat transfer. We
have developed theory and computational strategies that enable the
direct calculation of statistical entropy changes from the underlying
molecular dynamics involved in mixing two liquids. These entropy
changes are related to dynamical randomness and, yet, are consistent
with the thermodynamic entropy of mixing.