| 09:00 |
|
| 10:00 |
|
| 11:00 |
|
| 12:00 |
[12:00] Chemistry Colloquium
- Description:
- SPEAKER: Prof. Angela D. Lueking, The Pennsylvania State University, USA
TITLE: "Hydrogen Storage via Spillover through a Combined Experimental and Modelling Approach"
DATE: Friday 5fth April 2013
TIME: 12:00
ROOM: Chemistry Seminar Room
|
| 13:00 |
|
| 14:00 |
|
| 15:00 |
|
| 16:00 |
[16:00] MST colloquium
- Description:
- Speaker
Stavros C. Farantos
Affiliation
Department of Chemistry, University of Crete, and IESL, FORTH, Greece
Title
Non-linear Mechanics applied to Molecular Dynamics: understanding chemical reactions
Location
Department of Physics Bldg., Voutes, 3rd floor Seminar Room
Time
16:00
Language
English
Abstract
Nonlinear mechanics is now a mature science. It has successfully been applied to a diversity of fields that show complex behaviors. As far as Chemistry is concerned nonlinear mechanics has helped us to comprehend concepts such as Transition State, Activated Complex, and Reaction Pathways, which are the cornerstones in statistical theories of chemical reactions. For first time these concepts have been put on a rigorous mathematical ground and extended to polyatomic molecules with multivariable Potential Energy Surfaces and complicated topologies. The application of the theory of nonlinear mechanics to molecular dynamics had as a consequence to elevate the stage on which chemical reactions are performed from the configuration manifold to its cotangent bundle (phase space). The latter revealed that time invariant phase space structures, such as Periodic Orbits, Tori, Normally Hyperbolic Invariant Manifolds (NHIMs) and their (un)stable manifolds are the mathematical objects that should be associated with the transition state and reaction pathways. It has been demonstrated that bifurcations of periodic orbits, such as the center-saddle, define reaction paths in phase space, which can not be predicted from the landscape of the potential functions.
I shall present classical and exact quantum dynamical calculations for realistic cases of small triatomic molecules spectroscopically studied, and model systems for large biological
molecules, which show that nonlinear mechanics is ineluctable for understanding how chemical bonds break/form in elementary chemical reactions and the necessity of moving from structural chemistry to phase space chemistry.
|
| 17:00 |
|
| 18:00 |
|
| 19:00 |
|
| 20:00 |
|
| 21:00 |
|
April 2013
