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  Understanding and controlling regime switching in molecular diffusion

Hallerberg, S., & de Wijn, A. (2014). Understanding and controlling regime switching in molecular diffusion. Physical Review E, 90: 062901. doi:10.1103/PhysRevE.90.062901.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-2549-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-254A-2
Genre: Journal Article

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 Creators:
Hallerberg, Sarah1, Author              
de Wijn, A.S., Author
Affiliations:
1Max Planck Research Group Network Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, escidoc:2063295              

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 Abstract: Diffusion can be strongly affected by ballistic flights (long jumps) as well as long-lived sticking trajectories(long sticks). Using statistical inference techniques in the spirit of Granger causality, we investigate the appearance of long jumps and sticks in molecular-dynamics simulations of diffusion in a prototype system, a benzene molecule on a graphite substrate. We find that specific fluctuations in certain, but not all, internal degrees of freedom of the molecule can be linked to either long jumps or sticks. Furthermore, by changing the prevalence of these predictors with an outside influence, the diffusion of the molecule can be controlled. The approach presented in this proof of concept study is very generic and can be applied to larger and more complex molecules. Additionally, the predictor variables can be chosen in a general way so as to be accessible in experiments, making the method feasible for control of diffusion in applications. Our results also demonstrate that data-mining techniques can be used to investigate the phase-space structure of high-dimensional nonlinear dynamical systems.

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Language(s): eng - English
 Dates: 2014-12-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1103/PhysRevE.90.062901
 Degree: -

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Title: Physical Review E
Source Genre: Journal
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Publ. Info: Melville, NY : American Physical Society
Pages: 7 Volume / Issue: 90 Sequence Number: 062901 Start / End Page: - Identifier: ISSN: 1539-3755
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925225012