Photonic band structure of bcc colloidal crystals

Autor:	John A. Bloodgood, George H. Watson, Ranjit D. Pradhan
Rok vydání:	1997
Předmět:	Materials science Condensed matter physics business.industry Physics::Optics Context (language use) Crystal structure Colloidal crystal Condensed Matter::Soft Condensed Matter Crystal Optics Photonics Electronic band structure business Refractive index Photonic crystal
Zdroj:	Physical Review B. 55:9503-9507
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.55.9503
Popis:	Self-ordering colloidal systems are being recognized as possible candidates for optical photonic crystals. Such structures exhibit three-dimensional periodicity in refractive index, and possess lattice dimensions comparable to optical wavelengths. Recently, fcc colloidal crystals of water-suspended polystyrene microspheres were investigated in the context of photonic band structure. At lower polystyrene volume fractions, these colloidal suspensions crystallize in the bcc crystal lattice. This work extends our investigation of this system to cover the bcc phase and reiterates the use of Kossel lines in mapping the underlying photonic band structure. Along certain crystal directions, numerous Kossel lines intersect, giving rise to unusually large optical stop bands.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3b60e9bec450f6065e7a0d7056944a4a https://doi.org/10.1103/physrevb.55.9503 Zobrazit plný text záznamu