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Investigation of liquid interface structure with ion beam analysis

Investigation of liquid interface structure with ion beam analysis
Lim, Hee-JinJung, Kang-WonMoon, Daewon
Issued Date
11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17
Conference Paper
The presence of electric double layer (EDL) at liquid interface has been recognized for last 100 years but the atomic scale structure of EDL has not been revealed, even though optical or electrical techniques could monitor the change of EDL. We designed an ultra high vacuum compatible liquid cell with a single layer graphene window so that MEIS analysis can be applied to the graphene liquid
interface. We clearly observed the EDL structure formed between CuO and KI solution showing I accumulation and K depletion at the EDL with the width of ∼1 nm. Complementary TOF-SIMS analysis results will be also reported. Studies on systematic dependence of EDL structure on the bias voltage and electrolyte concentration are in progress. Preliminary results on EDL structure profiling with TOF-MEIS and further prospective on bioliquid interface, protein adsorption, and artificial cell membrane structure will be reported for discussions and comments
The 141st Committee on Microbeam Analysis of JSPS
Related Researcher
  • 문대원 Moon, Dae Won
  • Research Interests Coherent Raman Scattering; Surface Plasmon Resonance Imaging Ellipsometry; Imaging Mass Spectrometry; Time-of-flight Medium Energy Ion Scattering
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Appears in Collections:
Department of New Biology NanoBio Imaging Laboratory 2. Conference Papers
Division of Energy Technology 2. Conference Papers


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