Two‐Dimensional Single‐Crystal Nanowire Arrays

Two dimensions are better than one: 1D arrays of nanowires, produced using the superlattice nanowire pattern transfer (SNAP) technique, are extended into two dimensions to produce 2D single-crystal nanowire structures. The method is demonstrated as a general approach towards achieving ohmic contacts to p- and n-type silicon nanowires, regardless of their doping level. Photonic-like crystals and suspended structures (see figure) are also demonstrated.