Controlled Formation of Carbon Nanotubes and Nanotube Junctions from Bilayer Graphene (Small 26/2026)

Nanofabrication In the Research Article (e13639), Michael Schlegel, Jannik C. Meyer, and co-workers utilize a focused electron beam of a scanning transmission electron microscope to cut twisted bilayer graphene into nanoribbons, which spontaneously reconstruct into chiral carbon nanotubes. By using a cutting angle at half the twist angle of the bilayer, this approach enables the controlled fabrication of nanotube arrays and Y-junctions, opening a route towards precise engineering of carbon nanostructures.