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8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

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P1.46Fri 911:<strong>10</strong>-14:00Structural and dynamic changes of ionic liquids underan external electric fieldYanting Wang 11 Institute of Theoretical Physics, Chinese Academy of Sciences, 55 Zhongguancun EastRoad, P. O. Box 2735 <strong>10</strong>0190, Beijing, ChinaRoom temperature ionic liquids are very promising in many industrial applications, such asenvironment-friendly solvents, lubricants, and propellants. Our molecular dynamics simulationshave revealed that, under a very strong external electric field E><strong>10</strong>8 N/C, ionic liquids go througha structural change from heterogeneous to homogeneous, then to nematic-like. Under a weaker externalelectric field, the dynamic properties of ionic liquids can change while the structure retainsto be heterogeneous. A novel computational method has been developed to quantify this dynamicchange under nonequilibrium conditions.46

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