Reflectivity behavior of two-dimensional ordered array of metallodielectric composite particles at large incidence angles

Zhan, P.; Liu, J. B.; Dong, W.; Dong, H.; Chen, Z.; Wang, Z. L.; Zhang, Y.; Zhu, S. N.; Ming, N. B.
January 2005
Applied Physics Letters;1/31/2005, Vol. 86 Issue 5, p051108
Academic Journal
Optical reflectance of a two-dimensional (2D) metallodielectric (MD) photonic crystal composed of hexagonal array of close-packed silver-shell polystyrene-core composite particles has been studied at off-normal incidence under both P and S polarizations. A dramatic change in reflectivity behavior of the 2D MD film from a 2D colloidal crystal template and a homogeneous silver film has been observed. The phenomenon of strong reflectance bands of the 2D MD film was explained as a selective coupling of the incident light with surface plasmon of the 2D textured structure via the 2D grating.


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