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Multiple Length-Scale Ordering in Network-forming Ionic Liquids |
Mark Wilson |
Oxford University, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ, United Kingdom |
Abstract |
Recent developments in the molecular dynamics computer simulation of network-forming liquids are discussed. Relatively simple potential energy models, in which many-body (dipolar) polarization is accounted for, are able to reproduce a range of static and dynamic properties. Ion polarization is shown to account for the network topology via controlling the number of edge- and corner- sharing polyhedral units. The nature of this intermediate-range order (as probed by the Bhatia-Thornton structure factors) is shown to depend subtly on the fractions of such linkages. Furthermore, the presence of the intermediate-range order is shown to have important implications for both the low temperature liquid relaxation dynamics and the presence of extended-range order. |
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Presentation: Invited oral at E-MRS Fall Meeting 2008, Symposium G, by Mark WilsonSee On-line Journal of E-MRS Fall Meeting 2008 Submitted: 2008-05-20 08:38 Revised: 2009-06-07 00:48 |