Figure 1From: Ab initio design of nanostructures for solar energy conversion: a case study on silicon nitride nanowireSchematic drawings of the atomic structures of β-Si 3 N 4 bulk (a) and nanowire: (b) top and (c) side views. The red circle in (a) indicates the model of the nanowire in (b) and (c) created from the bulk. The yellow, blue, and white dots are Si, N, and H, respectively.Back to article page