TY - JOUR
T1 - Effective refractive index of face-centered-cubic and hexagonal close-packed 250 nm-SiO2 based colloidal crystals
AU - Salcedo-Reyes, Juan Carlos
N1 - Funding Information:
This work was partially supported by OFI-PUJ (Oficina de Fomento a la Investigación de la Pontificia Universidad Javeriana) under Grant 003131 and FBR (Fundación Banco de la República de Colombia) under Grant 200904.
PY - 2012
Y1 - 2012
N2 - A quantitative kinematic analysis, of the refraction properties of face-centered-cubic and hexagonal close-packed 250 nm-SiO2-based colloidal crystals, was performed using the plane wave expansion method. The angle-dependent effective refractive index, for different frequencies, was calculated taking into account the continuity of the tangential component of the wave vector across the interface and the energy conservation principle as well. The results demonstrate that the unusual optical properties, of the close packed SiO2-based colloidal crystals, depend strongly on the sphere-packing symmetry rather than from the material itself.
AB - A quantitative kinematic analysis, of the refraction properties of face-centered-cubic and hexagonal close-packed 250 nm-SiO2-based colloidal crystals, was performed using the plane wave expansion method. The angle-dependent effective refractive index, for different frequencies, was calculated taking into account the continuity of the tangential component of the wave vector across the interface and the energy conservation principle as well. The results demonstrate that the unusual optical properties, of the close packed SiO2-based colloidal crystals, depend strongly on the sphere-packing symmetry rather than from the material itself.
KW - artificial opals
KW - close packed face centered cubic
KW - equi-frequency surfaces
KW - hexagonal close packed
KW - photonic crystals
KW - plane wave expansion method
KW - refraction properties
UR - http://www.scopus.com/inward/record.url?scp=84885467237&partnerID=8YFLogxK
U2 - 10.1117/1.JNP.6.063518
DO - 10.1117/1.JNP.6.063518
M3 - Article
AN - SCOPUS:84885467237
SN - 1934-2608
VL - 6
JO - Journal of Nanophotonics
JF - Journal of Nanophotonics
IS - 1
M1 - 063518
ER -