Gentle transfer method for water-and acid/alkali-sensitive 2D materials for (S) TEM study

Junhao Lin, Yung-Chang Lin, Xinsheng Wang, Liming Xie, Kazutomo Suenaga

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We report a method in making transmission electron microscopy sample for both CVD-grown and exfoliated 2D materials without etching process, thus gentle to those 2D materials that are sensitive to water and reactive etchants. Large-scale WS2 monolayer grown on glass, NbS2 atomic layers grown on exfoliated h-BN flakes, and water-sensitive exfoliated TiS2 flakes are given as representative examples. We show that the as-transferred samples not only retain excellent structural integrity down to atomic scale but also have little oxidations, presumably due to the minimum contact with water/etchants. This method paves the way for atomic scale structural and chemical investigations in sensitive 2D materials.
Original languageEnglish (US)
Pages (from-to)116108
JournalAPL MATERIALS
Volume4
Issue number11
DOIs
StatePublished - Nov 21 2016
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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