紫光励起プラズモン面内分布制御デバイス

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  • Active control devices of violet-excited plasmonic fields

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<p>Dynamic controllable devices of violet-excited plasmonic fields with low polarization dependence were proposed for functional applications including plasmonic multi-color bioimaging and artificial photosynthesis. Although plasmonic nanometals are effective for strong light-energy confinements into nanoscales, it has been difficult to tune plasmonic properties once fabricated. We have proposed a novel tuning mechanism based on inclination of plasmonic plates, which allowed us to overcome strong limitation of the excitation light choice. In this study, dynamic controllability of violet excited plasmonic fields was evaluated by rigorous coupled wave analysis for 2D metallic nanogratings on microactuated diaphragms. Effective tuning of violet-excited plasmonic fields was realized in spite of slight hemispherical deformation of diaphragms with 2D metallic gratings.</p>

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