Ionic liquid wettability of CVD-grown graphene on Cu/α-Al2O3(0 0 0 1) characterized by in situ contact angle measurement in a vacuum

Takuya Kinoshita, Shingo Maruyama, Yuji Matsumoto

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Intrinsic wettability of CVD-grown graphene on Cu/α-Al2O3(0 0 0 1) to ionic liquid [emim][NTf2] was investigated by in situ contact angle measurement in a high vacuum. The contact angles increased with the coverage of graphene from a complete wetting regime on the clean Cu surface to a partial wetting regime on the surface fully covered with graphene. The measured contact angles were well explained by the Cassie equation. Since the contact angle of graphene was close to that of bulk HOPG, it is indicated that the first layer graphene is just enough to govern its wettability.

本文言語English
論文番号136781
ジャーナルChemical Physics Letters
735
DOI
出版ステータスPublished - 2019 11月 16

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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