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Plasmonic computing of spatial differentiation
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DOI：10.1038/ncomms15391.png)
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摘要
En 中文
Optical analog computing offers high-throughput low-power-consumption operation for specialized computational tasks. Traditionally, optical analog computing in the spatial domain uses a bulky system of lenses and filters. Recent developments in metamaterials enable the miniaturization of such computing elements down to a subwavelength scale. However, the required metamaterial consists of a complex array of meta-atoms, and direct demonstration of image processing is challenging. Here, we show that the interference effects associated with surface plasmon excitations at a single metal-dielectric interface can perform spatial differentiation. And we experimentally demonstrate edge detection of an image without any Fourier lens. This work points to a simple yet powerful mechanism for optical analog computing at the nanoscale.
Keyword:
POLARITON EXCITATION
EQUATION SOLVER
DESIGN
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期刊
IF:
15.7
论文数:
9.4W
被引数:
91.2W
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