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윤관호(Gwanho Yoon),이다솔(Dasol Lee),노준석(Junsuk Rho) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Dual-mode metasurfaces enabling simultaneous control of phase and spectral responses have been demonstrated. Conventional metasurfaces have shown many promising functionalities such as super-lensing, negative refraction and optical cloaking, but their operation is restricted by spatial coherence of light sources. In this work, we have exploited typical geometric metasurfaces to manipulate phase responses while reflection spectrum is also controlled by specific shape of each nanostructure. Two functionalities can be independently controlled, so the dual-mode metasurface can work as not only a hologram under coherent light, but also a colored reflective display under white light illumination.