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Self assembly of large area 3D photonic crystals

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Abstract

Three dimensional (3D) photonic crystals (PhCs) are important for many applications such as photon confinement, optical switching, bio-sensing etc. Their unique property arises from the periodic arrangement of micro/submicro-meter particles. There is a lack of simple method to fabricate the same. Here we present a simple method to fabricate uniform, large area 3D PhCs using polystyrene (PS) nanospheres by self- assembly method. PS nanospheres (150-200 nm) were synthesized using styrene monomer by wet chemical method. Size tunability of PS nanospheres has been achieved by changing the cross linking agent concentration. Finally self-assembly was utilized for PhC fabrication.

© 2012 Optical Society of America

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