Strain-engineered fabrication of high-density aligned graphene-based nanoscrolls via UV-tunable adhesive tapes.

Strain-engineered UV-tunable adhesive tapes enable the fabrication of high-density (≈ 380 nanoscrolls per mm) and controllably chiral graphene nanoscrolls with lengths of 90 μm.

• Why it matters: Achieving high-density GNSs with precise control over scroll chirality and direction has been challenging with existing methods, limiting their potential applications in electronics and materials science.
• What they did: The researchers used UV light-tunable adhesive tape to apply tensile strain to graphene, then released the strain to form GNSs, controlling the scroll angle by adjusting the tape's stretch direction, and also created heteronanoscrolls with MoS2.
• The result: This approach enhances GNS density and length, increases electrical conductivity through metal chloride intercalation, and enables optical responses in heteronanoscrolls, expanding possibilities for nanomaterial manipulation.