Geometry influence on the transmission spectra of dielectric single layers of spheres with different compactness
Fecha
2010Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1063/1.3434529
Resumen
The transmission of spectra of different dielectric spheres single layer arrangements has been
measured. High dielectric permittivity ε =7 spheres of several millimeters of diameter were used
to build the samples whose transmission was measured in the microwave range. The behavior of
lattices arranged in square and triangular geometries have been compared in a number of different
compactness ca ...
[++]
The transmission of spectra of different dielectric spheres single layer arrangements has been
measured. High dielectric permittivity ε =7 spheres of several millimeters of diameter were used
to build the samples whose transmission was measured in the microwave range. The behavior of
lattices arranged in square and triangular geometries have been compared in a number of different
compactness cases. The same patterns measured have also been calculated by finite-difference
time-domain FDTD method. Spectra from different geometrical arrangements of the same
compactness measured with the same filling fraction value are very similar in some cases. Based
on the level of similarity we propose three compactness regions. The high compactness region,
where the structure effect is important, presents spectra clearly different for the two geometries. In
a medium compactness region spectra are almost identical, suggesting a dominant effect of single
sphere effects. Finally, in the low compactness region, the spectra from the two geometrical
configurations diverge again as the Bragg diffraction values are approached. [--]
Materias
Transmission spectra,
Dielectric single layers of spheres,
Compactness
Editor
AIP Publishing
Publicado en
Journal of Applied Physics, 107, 124902 (2010)
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila