Scalable Moiré Manufacturing
Manufacturing moiré materials provides a transformative platform to understand how structure and symmetry at the atomic scale govern material properties. While significant progress has been made, existing artisanal manufacturing methods have been laborious- and time-intensive, yielding stacks restricted to irregularly shaped micrometer dimensions (ranging up to 25 um2 , but often smaller and occasionally larger), and limited by substantial technical challenges, including production efficiency, fabrication-induced moiré disorder, stochastic exfoliation, and disruptive interfacial contaminations. Here, I introduce a scalable in-situ exfoliation and stacking manufacturing method for engineering moiré superlattices at macroscopic scales, limited only by the dimensions of the parent crystal (~1 to 2 cm2 ), with unprecedented uniformity.
By leveraging intrinsic strain gradients in moiré superlattices, we observe enhanced phenomena that are absent with conventional 2D moiré systems, where the moiré reconstruction involves both layers. This technique enables effective batch assembly of highly customizable, macroscopic moiré interfaces that serve as the basis for arrays of superlattice devices derived from a single van der Waals heterostructure, enabling device architectures that were previously area-limited and breaking the onedevice-per-flake bottleneck that has limited throughput, reproducibility, and systematic exploration. Additionally, this provides a versatile platform for exploring previously inaccessible quantum phenomena with macroscopic advanced characterization techniques.
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Meeting Link: https://stanford.zoom.us/my/gregoryzaborskijr?pwd=YlRuTXpWS3d1TnJvSkwrd…