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SUMMARY:Structure and dynamics of ionic liquids confined between metallic 
 surfaces - Professor Marialore Sulpizi\, Johannes Gutenberg University
DTSTART:20210303T143000Z
DTEND:20210303T153000Z
UID:TALK153682@talks.cam.ac.uk
CONTACT:Lisa Masters
DESCRIPTION:The peculiar properties of ionic liquids in confinement have n
 ot only become essential for energy storage\, catalysis and tribology\, bu
 t still pose fundamental questions.\nRecently\, an anomalous liquid-solid 
 phase transition has been observed in atomic force microscopy experiments 
 for 1- butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4])\, the tra
 nsition being more pronounced for metallic surfaces. Image charges have be
 en suggested as the key element driving the anomalous freezing.\nUsing ato
 mistic molecular dynamics simulations\, we investigate the impact of image
  charges on structure\, dynamics and thermodynamics of [BMIM][BF4] confine
 d between gold electrodes. Our results not only unveil a minor role played
  by the metal polarisation\, but also provide a novel description of the i
 nterfacial layer\,\nwhere long range effects are clearly visible in the dy
 namical properties up to 10 nanometers away from the surface\, possibly af
 fecting viscous forces in the experiments.\nThe influence on the interfaci
 al structure and dynamics of applied electric fields and non-equilibrium f
 low conditions\, which also apply to AFM experiments are also discussed.
LOCATION:Zoom: Meeting ID: 956 7058 2700 Passcode: 141090
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