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Contact angle measurement of free-standing square-millimeter single-layer graphene

Author

Listed:
  • Anna V. Prydatko

    (Leiden University)

  • Liubov A. Belyaeva

    (Leiden University)

  • Lin Jiang

    (Leiden University)

  • Lia M. C. Lima

    (Leiden University)

  • Grégory F. Schneider

    (Leiden University)

Abstract

Square millimeters of free-standing graphene do not exist per se because of thermal fluctuations in two-dimensional crystals and their tendency to collapse during the detachment from the substrate. Here we form millimeter-scale freely suspended graphene by injecting an air bubble underneath a graphene monolayer floating at the water–air interface, which allowed us to measure the contact angle on fully free-standing non-contaminated graphene. A captive bubble measurement shows that free-standing clean graphene is hydrophilic with a contact angle of 42° ± 3°. The proposed design provides a simple tool to probe and explore the wettability of two-dimensional materials in free-standing geometries and will expand our perception of two-dimensional materials technologies from microscopic to now millimeter scales.

Suggested Citation

  • Anna V. Prydatko & Liubov A. Belyaeva & Lin Jiang & Lia M. C. Lima & Grégory F. Schneider, 2018. "Contact angle measurement of free-standing square-millimeter single-layer graphene," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06608-0
    DOI: 10.1038/s41467-018-06608-0
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    Cited by:

    1. Seung-Il Kim & Ji-Yun Moon & Seok-Ki Hyeong & Soheil Ghods & Jin-Su Kim & Jun-Hui Choi & Dong Seop Park & Sukang Bae & Sung Ho Cho & Seoung-Ki Lee & Jae-Hyun Lee, 2024. "Float-stacked graphene–PMMA laminate," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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