Photonic crystals with skeleton structure

A skeleton structure, which consists of dielectric cylinders connecting the tetrahedral and octahedral centers among close-packed template spheres, is found in a titania inverse opal prepared by the template-directed method using monodispersed polystyrene particles of size 270 nm. The skeleton structure can have two complete photonic band gaps. (C) 2002 Elsevier Science B.V. All rights reserved.