Conservative and Dissipative Interactions of Ionic Liquids in Nanoconfinement

James Richard Thorley Seddon

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)


By applying a small-amplitude (∼200 pm) oscillation to an atomic force microscopy probe during force–distance spectroscopy we are able to separate the “resistance to squeeze” of an ionic liquid nanoconfined between the probe and a mica sheet into its conservative and dissipative components. The interaction stiffness of the ionic liquid increases to a solid-like value as the mica is approached, while the “effective local viscosity” dramatically increases above the bulk value due to adjacent layers of ion-pairs interlocking as they slide over each other.
Original languageEnglish
Pages (from-to)22197-22201
JournalJournal of physical chemistry C
Issue number38
Publication statusPublished - 2014


  • METIS-321261
  • IR-103207


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