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[資源]
nature communications最新:Au Ag有關(guān)光學(xué)性能
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材料科學(xué)最新前沿?zé)狳c(diǎn) | 英文文獻(xiàn)或者教材 | Nano&Micro | nano physics&chem |
催化資料 | 光子納米生物醫(yī)學(xué) | 納米金 納米材料 生物傳感器 | 金賢重 |
Point | 科學(xué)與社會 | Metal NPs |
鐵桿木蟲 (著名寫手)
| Recent progress in nanophotonics includes demonstrations of meta-materials displaying negative refraction at optical frequencies, directional single photon sources, plasmonic analogies of electromagnetically induced transparency and spectacular Fano resonances. The physics behind these intriguing effects is to a large extent governed by the same single parameter—optical phase. Here we describe a nanophotonic structure built from pairs of closely spaced gold and silver disks that show phase accumulation through material-dependent plasmon resonances. The bimetallic dimers show exotic optical properties, in particular scattering of red and blue light in opposite directions, in spite of being as compact as ~λ3/100. These spectral and spatial photon-sorting nanodevices can be fabricated on a wafer scale and offer a versatile platform for manipulating optical response through polarization, choice of materials and geometrical parameters, thereby opening possibilities for a wide range of practical applications. |



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