Borophene, a two-dimensional boron sheet, can adopt a variety of polymorphic structures that are predicted to possess interesting and potentially useful electronic properties. Micrometre-scale single-crystal borophene domains have now been grown on a square-lattice Cu(100) surface. The resulting boron sheets feature a rectangular unit cell, intrinsic stripe modulations and an unusual electron band structure.
- Rongting Wu
- Stephen Eltinge
- Ivan Božović
