Calculated Q factors for 16-1 photonic crystal for k_z = 0.5/Λ (a) at different k-points on the path Γ–K–M at the Dirac frequency and (b) for different trapped frequencies including the Dwarf Dirac point at the k point of the Brillouin zone. Insets of both panels show the confined modes that are traced for making such plots. In both cases, the Dwarf Dirac point shows better confinement than the other sample points. A similar situation occurs for other structures (Figs. S3 and S4).