A polymer-free method for stacking 2D materials has been demonstrated, using a cantilevered transfer support made from metallized silicon nitride. The assembly process, which is compatible with ultrahigh-vacuum operation, results in atomically clean and uniform interfaces.
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References
Bøggild, P. Research on scalable graphene faces a reproducibility gap. Nat. Commun. 14, 1126 (2023). This comment article discusses issues with current transfer techniques.
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This is a summary of: Wang, W. et al. Clean assembly of van der Waals heterostructures using silicon nitride membranes. Nat. Electron. https://doi.org/10.1038/s41928-023-01075-y (2023).
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A metallized silicon nitride membrane for clean 2D heterostructure assembly. Nat Electron 6, 947–948 (2023). https://doi.org/10.1038/s41928-023-01076-x
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DOI: https://doi.org/10.1038/s41928-023-01076-x
