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题名:
Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial
作者: Fang, Liang; Yao, Na; Pu, Mingbo; Wang, Changtao; Luo, Xiangang
刊名: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
出版日期: 2015-03-01
卷号: 118, 期号:4, 页码:1543-1549
文章类型: Article
英文摘要: We numerically demonstrated the sub-diffraction-limited magnified Talbot imaging in a metamaterial composed of cylindrical stacked metal/dielectric multilayer. It was found that the magnified Talbot imaging could occur without the requirement of the metal/dielectric permittivity matching condition as satisfied in the hyperlens. Specifically, in this work, a practical realization of the magnified Talbot imaging was performed by Ag/Al2O3 multilayer stack at the wavelength of 337 nm. Unlike the traditional Talbot effect, the Talbot length in this case is not a constant but a variable and the variable Talbot length can be predicted roughly by ray optics approach. The contrast of the magnified Talbot imaging is decided by both the imaginary part and the real part in permittivity of the metamaterial. In order to obtain a deep sub-wavelength magnified Talbot image at the outer surface of the cylindrical metamaterial, the outer cylindrical radius should be optimized and the imaginary part in the permittivity should be small enough.
WOS标题词: Science & Technology ; Technology ; Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]: Materials Science ; Physics
关键词[WOS]: NEAR-FIELD MICROSCOPY ; ANISOTROPIC METAMATERIALS ; OPTICAL HYPERLENS ; SILVER SUPERLENS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000349598000047
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2528
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Nanofabricat & Microeng, Chengdu 610209, Peoples R China

Recommended Citation:
Fang, Liang,Yao, Na,Pu, Mingbo,et al. Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2015,118(4):1543-1549.
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