Transfer-Free Conformal Graphene Coating on Pyramidal Microstructures Decorated with Silver Nanoparticles for Superior Raman Signal Enhancement.

ABSTRACT: Graphene, a two-dimensional nanomaterial with excellent physicochemical properties, has considerable potential to functionalize surfaces for diverse applications. However, reliable methods for preparing uniform conformal graphene on complex surfaces are still limited. In this study, we develop a practical strategy for the direct growth of conformal graphene coatings on silicon substrates textured with randomly distributed micropyramidal structures. The produced transfer-free graphene exhibits high uniformity (monolayer content ∼95%), low defect density, and excellent conformality, even across high-curvature features, such as micropyramid apexes. The graphene films not only faithfully replicate the underlying microstructures but also contribute to advantageous surface properties, including

SUBMITTER: Lai CY 

PROVIDER: S-EPMC12464906 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature