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	Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial
	Fang, Liang; Yao, Na; Pu, Mingbo; Wang, Changtao; Luo, Xiangang
刊名	Applied Physics A: Materials Science and Processing
	2015
卷号	118期号:4页码:1543-1549
ISSN号	0947-8396
通讯作者	Luo, Xiangang
中文摘要	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. © 2015, Springer-Verlag Berlin Heidelberg.
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. © 2015, Springer-Verlag Berlin Heidelberg.
学科主题	Metamaterials - Multilayers - Permittivity
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000349598000047
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/6893]
专题	光电技术研究所_微细加工光学技术国家重点实验室（开放室）
作者单位	State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu, China
推荐引用方式 GB/T 7714	Fang, Liang,Yao, Na,Pu, Mingbo,et al. Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial[J]. Applied Physics A: Materials Science and Processing,2015,118(4):1543-1549.
APA	Fang, Liang,Yao, Na,Pu, Mingbo,Wang, Changtao,&Luo, Xiangang.(2015).Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial.Applied Physics A: Materials Science and Processing,118(4),1543-1549.
MLA	Fang, Liang,et al."Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial".Applied Physics A: Materials Science and Processing 118.4(2015):1543-1549.

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