Ultraflat Cu(111) foils by surface acoustic wave-assisted annealing
Nature Communications, ISSN: 2041-1723, Vol: 15, Issue: 1, Page: 9488
2024
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Studies from Nanyang Technological University Further Understanding of Science [Ultraflat Cu(111) foils by surface acoustic wave-assisted annealing]
2024 NOV 20 (NewsRx) -- By a News Reporter-Staff News Editor at NewsRx Science Daily -- Data detailed on science have been presented. According to
Article Description
Ultraflat metal foils are essential for semiconductor nanoelectronics applications and nanomaterial epitaxial growth. Numerous efforts have been devoted to metal surface engineering studies in the past decades. However, various challenges persist, including size limitations, polishing non-uniformities, and undesired contaminants. Thus, further exploration of advanced metal surface treatment techniques is essential. Here, we report a physical strategy that utilizes surface acoustic wave assisted annealing to flatten metal foils by eliminating the surface steps, eventually transforming commercial rough metal foils into ultraflat substrates. Large-area, high-quality, smooth 2D materials, including graphene and hexagonal boron nitride (hBN), were successfully grown on the resulting flat metal substrates. Further investigation into the oxidation of 2D-material-coated metal foils, both rough and flat, revealed that the hBN-coated flat metal foil exhibits enhanced anti-corrosion properties. Molecular dynamics simulations and density functional theory validate our experimental observations.
Bibliographic Details
Springer Science and Business Media LLC
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