- Professor of Physics
- Director of Undergraduate Studies and Research
- Senator, Graduate Faculty (2014-2017)
- Editor, Adsorption Science and Technology
Department of Physics and Astronomy,
University of Missouri
In my group we use a combination of theoretical modeling and computer simulations to investigate "nano-sponges"--materials with pores in the nanometer scale--that are capable of storing hydrogen and natural gas (methane) reversibly by physisorption at moderate pressures. In particular we seek to under-stand how the nanopores can be engineered (optimal pore size and geometry, chemical surface functionaliation) to enhance the hydrogen-pore interaction. For example, in Ref.  we demonstrated theoret-ically by ab initio calculations and grand canonical Monte Carlo simulations how boron doping of carbon could raise the interaction energies substantially creating a material capable of reaching acceptable stor-age characteristics at room temperature. Recently our experimental collaborators in Prof. Pfeifer's group confirmed enhanced hydrogen sorption for boron-doped carbon . We are also working to develop the theoretical foundations of new experimental methods to characterize porous materials (see, e.g., ), and sometimes even perform some of the experiments ourselves !
In addition, we also investigate the curious phases and phase transitions observed in numerous quasi-two dimensional systems such as two-dimensional electron systems (Quantum Hall Effects ), spins and spin chains ("Extended Universality" ), and organic films deposited on a substrate .
Curriculum Vitae (brief, detailed version available upon request)
List of Publications, Reprints and Preprints
I got my Licenciado en Fisica (MS in Physics) degree in 1991 at the University of Buenos Aires (Argentina), working with Prof. Guillermo G. Dussel in ``Collective description of octupolar degrees of freedom in nuclei.''
I got my Ph.D. in Physics in 1997 at the University of Washington, in Seattle, working with Prof. David J. Thouless. My dissertation was on ``Vortex dynamics in superfluid systems,'' where I also did some work on current distribution and breakdown of the Quantum Hall Effect.
I worked as a postdoctoral research associate with Prof. Alan T. Dorsey, in theoretical aspects of vortices in superconductors, and in non-linear problems, in particular solitons on the edge of a two-dimensional electron system.