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(Color) Tetrastack photonic crystal structure compared with diamond. (a) Diamond unit cell, (b) tetrastack unit cell, (c) scanning electron microscopy of a tetrahedron building block for a tetrastack, (d) side view tetrastack crystal, (e) top view tetrastack crystal, and (f) photonic band structure for an inverted tetrastack.
(Color) Photonic band gap maps as a function of solid volume filling fraction for colloid-based structures. (a) Inverted fcc, ; (b) inverted diamond, , (c) inverted tetrastack, , (d) diamond, , (e) tetrastack, , (f) inverted diamond, , (g) inverted tetrastack, , (h) diamond, , and (i) tetrastack, . is the cubic lattice constant (fcc lattice) and is the speed of light.
(Color) Photonic band gap width as a function of refractive index contrast. (a) Inverted tetrastack, , (b) inverted diamond, , (c) tetrastack, , (d) diamond, , and (e) inverted fcc, .
(Color) Effect of tetrahedra orientation in an fcc structure on the relative photonic band gap width. Building block axes rotate from (111) to the (100) direction for (a) inverted tetrastack, and (b) tetrastack, .
Photonic band gap widths of colloidal PCs.
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