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説明:

While scalable graphene synthesis by chemical vapor deposition (CVD) has been in widespread use since 2008, fundamental research requiring consistently high quality continues to rely upon exfoliated graphene. Here we use evaporated Ni to transfer ultrahigh-quality CVD graphene from Cu(111) as continuous films or arrays of predefined shapes. By careful control over the evaporation conditions, we avoid damage to the graphene, preserving intrinsic quality. The dry transfer process minimizes strain and doping. After hBN encapsulation, the CVD-grown graphene shows low-temperature magnetotransport behavior on par with the best exfoliated graphene devices. The CVD-grown graphene can be stacked to create magic-angle twisted bilayer graphene with low twist disorder. These results demonstrate that CVD-grown graphene can replace exfoliated flakes for even the most demanding applications.

権利情報:

• In Copyright
  

  This document is the Accepted Manuscript version of a Published Article that appeared in final form in Nano Letters, copyright © 2025 American Chemical Society. To access the final published article see https://pubs.acs.org/doi/10.1021/acs.nanolett.5c03305.

キーワード: Chemical vapor deposition (CVD), Graphene, Twisted bilayer graphene

刊行年月日: 2025-10-29

出版者: American Chemical Society (ACS)

掲載誌:

• Nano Letters (ISSN: 15306984) vol. 25 issue. 43 p. 15572-15578

研究助成金:

• Ministry of Education, Culture, Sports, Science and Technology
• Gordon and Betty Moore Foundation GBMF10277
• Basic Energy Sciences DE-SC0019443
• Core Research for Evolutional Science and Technology JPMJCR24A5
• Japan Society for the Promotion of Science 21H05233
• Japan Society for the Promotion of Science 23H02052
• Division of Materials Research DMR-2011738

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI:

公開URL: https://doi.org/10.1021/acs.nanolett.5c03305

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更新時刻: 2026-06-25 14:14:43 +0900

MDRでの公開時刻: 2026-10-20 08:32:57 +0900