Publication date: 15th December 2025
Efforts in nanoscience have long sought scalable methods for producing van der Waals materials, following the landmark discovery of graphene via mechanical exfoliation. While this technique offers unmatched material quality, its scalability is limited by poor control over thickness, lateral size, and yield. In this talk, I will present a roll-to-roll platform that enables massively parallel mechanical exfoliation of layered crystals, producing films densely populated with nanosheets across large areas. The method achieves a unique compromise between lateral size, scalability, and cost-efficiency, while avoiding harsh treatments and remaining compatible with air-sensitive materials. Beyond individual flakes, we demonstrate the formation of continuous wafer-scale films and, for anisotropic compounds, the production of aligned nanosheet assemblies. These materials serve as the building blocks for large batches of field-effect transistors, flexible photodetectors, and wafer-scale electronic circuits, confirming both practicality and versatility. This scalable strategy presented here paves the way for low-cost, high-performance 2D materials integration in next-generation optoelectronic and flexible device technologies.
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