Band gap formation Bandgap 1 Carbon layers 1 Electron 1 Energy 1 Energy gap 1 Future challenges 1 Future prospects 1 Graphene 1 One of a kind 1 Semiconductor 1 Semiconductor device manufacture 1 Semiconductor devices 1 Semimetallics 1 Shear strain 1 Silicon 1 Single-particle 1 Sizeable band gap 1 Tunable Band-gap 1 Tunable band gap 1