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    题名: Superenhanced photonic nanojet by core-shell microcylinders
    作者: Liu, Cheng-Yang
    贡献者: 淡江大學機械與機電工程學系
    关键词: Photonic nanojet;Microcylinder;Power enhancement
    日期: 2012-05
    上传时间: 2012-05-10 14:57:30 (UTC+8)
    出版者: Amsterdam: Elsevier BV * North-Holland
    摘要: The super-enhancement of photonic nanojets generated at the shadow side surfaces of core-shell microcylinders illuminated by a plane wave is reported. Using high resolution finite-difference time-domain simulation, the enhancements of photonic nanojet at resonance and off-resonance conditions of microcylinders are investigated. The intensity enhancement of photonic nanojet depends strongly on the thickness of metal shell. Under proper resonance condition, the photonic nanojet super-enhancement can be excited in the core-shell microcylinder. Even under off-resonance condition, the photonic nanojet from microcylinder is still strong enough. The results may provide a new technique to detect and image nanoscale objects below the diffraction limit. This could yield a new ultra-microscopy technique for using visible light to detecting nanoparticles, optical gratings, and single molecules.
    關聯: Physics Letters A 376(23), pp.1856–1860
    DOI: 10.1016/j.physleta.2012.04.035
    显示于类别:[機械與機電工程學系暨研究所] 期刊論文


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