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Optical response of a flat metallic surface coated with a monolayer array of latex spheres |
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| Authors: | Lei Shi Xiaohan Liu Haiwei Yin |
| Institution: | a Department of Physics, Fudan University, Shanghai 200433, People's Republic of China b Key Laboratory of Micro and Nano Photonic Structures, Ministry of Education, Fudan University, Shanghai 200433, People's Republic of China c Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People's Republic of China |
| Abstract: | We report on the fabrication, characterization and simulation of a structure consisting of a flat metallic surface coated with a monolayer array of latex spheres. This structure shows interesting optical response: over flat metallic surfaces a series of reflection minima appear in reflection spectra. Numerical simulations revealed that the structure can support two types of surface modes: surface plasmon-polaritons bound at the metallic surface and guided modes confined to the array of latex spheres, or their hybrids. Both experimental and theoretical results indicated that these surface modes show well-defined band structures due to the introduced periodicity by the monolayer array of latex spheres. |
| Keywords: | Metallic surface Latex sphere Guided mode Surface plasmon-polariton |
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