A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film

doi:10.1088/1674-1056/22/10/104213

中国物理B ›› 2013, Vol. 22 ›› Issue (10): 104213-104213.doi: 10.1088/1674-1056/22/10/104213

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film

张祖银, 王立娜, 胡海峰, 李康文, 马勋鹏, 宋国峰

Laboratory of Nano-Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

收稿日期:2012-11-16 修回日期:2013-01-29 出版日期:2013-08-30 发布日期:2013-08-30
基金资助:
Project supported by the National Key Research Program of China (Grant No. 2011ZX01015-001).

A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film

Zhang Zu-Yin (张祖银), Wang Li-Na (王立娜), Hu Hai-Feng (胡海峰), Li Kang-Wen (李康文), Ma Xun-Peng (马勋鹏), Song Guo-Feng (宋国峰)

Laboratory of Nano-Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Received:2012-11-16 Revised:2013-01-29 Online:2013-08-30 Published:2013-08-30
Contact: Zhang Zu-Yin E-mail:wo2baobao1213@163.com
Supported by:
Project supported by the National Key Research Program of China (Grant No. 2011ZX01015-001).

摘要/Abstract

摘要： We investigate the sensitivity and figure of merit (FOM) of a localized surface plasmon (LSP) sensor with gold nanograting on the top of planar metallic film. The sensitivity of the localized surface plasmon sensor is 317 nm/RIU, and the FOM is predicted to be above 8, which is very high for a localized surface plasmon sensor. By employing the rigorous coupled-wave analysis (RCWA) method, we analyze the distribution of the magnetic field and find that the sensing property of our proposed system is attributed to the interactions between the localized surface plasmon around the gold nanostrips and the surface plasmon polarition on the surface of the gold planar metallic film. These findings are important for developing high FOM localized surface plasmon sensors.

关键词: localized surface plasmon biosensor, figure of merit, nanogratings, gold film

Abstract: We investigate the sensitivity and figure of merit (FOM) of a localized surface plasmon (LSP) sensor with gold nanograting on the top of planar metallic film. The sensitivity of the localized surface plasmon sensor is 317 nm/RIU, and the FOM is predicted to be above 8, which is very high for a localized surface plasmon sensor. By employing the rigorous coupled-wave analysis (RCWA) method, we analyze the distribution of the magnetic field and find that the sensing property of our proposed system is attributed to the interactions between the localized surface plasmon around the gold nanostrips and the surface plasmon polarition on the surface of the gold planar metallic film. These findings are important for developing high FOM localized surface plasmon sensors.

Key words: localized surface plasmon biosensor, figure of merit, nanogratings, gold film

中图分类号: (Waveguides, couplers, and arrays)

42.82.Et

42.82.Gw (Other integrated-optical elements and systems) 42.25.Bs (Wave propagation, transmission and absorption)

张祖银, 王立娜, 胡海峰, 李康文, 马勋鹏, 宋国峰. A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film[J]. 中国物理B, 2013, 22(10): 104213-104213.

Zhang Zu-Yin (张祖银), Wang Li-Na (王立娜), Hu Hai-Feng (胡海峰), Li Kang-Wen (李康文), Ma Xun-Peng (马勋鹏), Song Guo-Feng (宋国峰). A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film[J]. Chin. Phys. B, 2013, 22(10): 104213-104213.

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A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film

A high figure of merit localized surface plasmon sensor based on a gold nanograting on the top of a gold planar film

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