Extended Data Fig. 5: Detailed structural parameters of 3D C₅ symmetric photonic disclination cavities.

a, Top and tilted views of the square-lattice slab structure with the following parameters: a = 500 nm, r₀ = 0.18 a, d₀ = 0.54 a, and h = 275 nm, where a, r₀, d₀, and h are the lattice constant, radius of air hole, center-to-hole distance, and slab thickness, respectively. b-c, C₅ symmetric photonic disclination cavities with nonmodified (b) and modified (c) disclination boundaries. The shifting parameters of the core (d_c; red circle) and boundary (d_b; green circle) are as follows: (d_c, d_b) = (0.28 a, 0), (0.25 a, 0.31 a), and (0.40 a, 0.31 a) for the cavity with nonmodified disclination boundary, the expanded-core cavity with modified disclination boundary, and shrunken-core cavity with modified disclination boundary, respectively.