Strain-Induced Decoupling Drives Gold-Assisted Exfoliation of Large-Area Monolayer 2D Crystals.

ABSTRACT: Gold-assisted exfoliation (GAE) is a groundbreaking mechanical exfoliation technique that produces centimeter-scale single-crystal monolayers of 2D materials. Such large, high-quality films offer unparalleled advantages over the micron-sized flakes typically produced by conventional exfoliation techniques, significantly accelerating the research and technological advancements in the field of 2D materials. Despite its wide applications, the fundamental mechanism of GAE remains poorly understood. In this study, using MoS₂ on Au as a model system, ultra-low frequency Raman spectroscopy is employed to elucidate how the interlayer interactions within MoS₂ crystals are impacted by the gold substrate. The results reveal that the coupling at the first MoS₂-MoS₂ int

SUBMITTER: Ziewer J 

PROVIDER: S-EPMC11983244 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature