“…Single and multiparticle propagation characteristics [16,52], behaviours in electric and magnetic fields [17,18,39] together with optical properties [6,35,50] of these graphene structures have been researched. As fundaments for further theoretical and experimental analysis, single-electron properties of single-layer circular [22,57], hexagonal [14,52,61] and triangular [2,18,21,24,53,61] quantum dots have been extensively numerically and analytically investigated. The tight-binding model [8,21,53], along with the associated Fermi level energy Dirac-Weyl approximation [54,61], serves as a common cornerstone of theoretical approach to electron propagation in the graphene honeycomb lattice.…”