Surface thermal fluctuation spectroscopy study of ultra-thin ionic liquid films on quartz

Shingo Maruyama, Yuki Ishikawa, Takahisa Mitsui, Kenichiro Aoki, Yuji Matsumoto

研究成果: Article査読

抄録

We apply a surface thermal fluctuation spectroscopy technique to investigate the liquid nature of ionic liquid (IL) thin films and micro-droplets. While the spectrum for bulk IL was well explained by a simple Newtonian fluid model, a significant contribution of viscoelasticity was suggested for the vacuum-deposited thin films and micro-droplets. For a sample of IL micro-droplets with statistical distributions of their size and thickness, the scanning surface fluctuation spectroscopy was demonstrated to spatially map out the thickness and viscoelasticity values for effectively investigating the correlation between them, successfully reproducing a typical surface morphology of the sample as well.

本文言語English
論文番号075503
ジャーナルApplied Physics Express
14
7
DOI
出版ステータスPublished - 2021 7

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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