A quasi-melting transfer technique enables clean, sequential transfer of graphene and hexagonal boron nitride monolayers from germanium substrates under vacuum conditions. Controlled lattice alignment yields atomically precise, wrinkle-free superlattices with tunable stacking and twist angles, enabling scalable fabrication of high-quality 2D heterostructures for advanced electronics.
- Chao Zhang
- Quan Xie
- Tao Deng