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题名:
Sub-diffraction phase-contrast imaging of transparent nano-objects by plasmonic lens structure
作者: Yao, Na; Wang, Changtao; Tao, Xing; Wang, Yanqin; Zhao, Zeyu; Luo, Xiangang
刊名: NANOTECHNOLOGY
出版日期: 2013-04-05
卷号: 24, 期号:13
文章类型: Article
英文摘要: We propose a specially designed plasmonic lens structure to succeed in realizing sub-diffraction phase-contrast imaging of transparent nano-objects. The nano-objects are embedded inside the insulator layer of the metal-insulator-metal (MIM) plasmonic structure and have a small refractive index difference with respect to the transparent insulator layer. The excited surface plasmons in the MIM structure help to greatly enhance scattered light from the nano-objects and effectively suppress the transmitted illumination light. A spatial resolution of about 64 nm and a minimum distinguishable refractive index difference down to 0.05 are numerically demonstrated. For sub-diffraction phase-contrast imaging of irregular three-dimensional (3D) nanowires and nanocylinders, the optimized MIM structure shows much better performance in comparison with that of a superlens.
WOS标题词: Science & Technology ; Technology ; Physical Sciences
类目[WOS]: Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]: Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]: SILVER SUPERLENS ; MICROSCOPY ; HYPERLENS ; RESOLUTION ; WAVE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000316208600005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1216
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:
Yao, Na,Wang, Changtao,Tao, Xing,et al. Sub-diffraction phase-contrast imaging of transparent nano-objects by plasmonic lens structure[J]. NANOTECHNOLOGY,2013,24(13).
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