Photoluminescence via gap plasmons between single silver nanowires and a thin gold film
In this work, we investigate the one-photon photoluminescence from a system consisting of an Ag nanowire on an Au film with a ∼6 nm dielectric spacer that supports a localized resonance known as the gap plasmon mode. Although the Ag nanowire and Au film exhibit weak photoluminescence on their own, t...
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sg-ntu-dr.10356-838592020-06-01T10:21:17Z Photoluminescence via gap plasmons between single silver nanowires and a thin gold film Hu, Hailong Akimov, Yuriy A. Duan, Huigao Li, Xianglin Liao, Mingyi Tan, Rachel Lee Siew Wu, Lin Chen, Hongyu Fan, Hongjin Bai, Ping Lee, Pooi See Yang, Joel K. W. Shen, Ze Xiang School of Materials Science & Engineering School of Physical and Mathematical Sciences Gap plasmon Photoluminescence In this work, we investigate the one-photon photoluminescence from a system consisting of an Ag nanowire on an Au film with a ∼6 nm dielectric spacer that supports a localized resonance known as the gap plasmon mode. Although the Ag nanowire and Au film exhibit weak photoluminescence on their own, the combined system produces an enhanced PL emission. Our analysis reveals that the strong PL emission in this system was due to the enhanced laser absorption in, and PL emission from Au, with the Ag nanowire acting as an efficient antenna. The PL due to the gap mode is sensitive to the polarization of the laser excitation with respect to the nanowire orientation, and shows a clear dipolar emission profile. PL emission wavelengths were found to depend only on the nanowire width, and independent of its length. These observations were supported by simulation results indicating that gap plasmons are excited by light polarized transverse to the nanowire length. NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) 2016-09-28T04:28:52Z 2019-12-06T15:33:18Z 2016-09-28T04:28:52Z 2019-12-06T15:33:18Z 2013 Journal Article Hu, H., Akimov, Y. A., Duan, H., Li, X., Liao, M., Tan, R. L. S., et al. (2013). Photoluminescence via gap plasmons between single silver nanowires and a thin gold film. Nanoscale, 5(24), 12086-12091. 2040-3364 https://hdl.handle.net/10356/83859 http://hdl.handle.net/10220/41505 10.1039/c3nr03624c en Nanoscale © 2013 The Royal Society of Chemistry. |
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Gap plasmon Photoluminescence Hu, Hailong Akimov, Yuriy A. Duan, Huigao Li, Xianglin Liao, Mingyi Tan, Rachel Lee Siew Wu, Lin Chen, Hongyu Fan, Hongjin Bai, Ping Lee, Pooi See Yang, Joel K. W. Shen, Ze Xiang Photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
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In this work, we investigate the one-photon photoluminescence from a system consisting of an Ag nanowire on an Au film with a ∼6 nm dielectric spacer that supports a localized resonance known as the gap plasmon mode. Although the Ag nanowire and Au film exhibit weak photoluminescence on their own, the combined system produces an enhanced PL emission. Our analysis reveals that the strong PL emission in this system was due to the enhanced laser absorption in, and PL emission from Au, with the Ag nanowire acting as an efficient antenna. The PL due to the gap mode is sensitive to the polarization of the laser excitation with respect to the nanowire orientation, and shows a clear dipolar emission profile. PL emission wavelengths were found to depend only on the nanowire width, and independent of its length. These observations were supported by simulation results indicating that gap plasmons are excited by light polarized transverse to the nanowire length. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Hu, Hailong Akimov, Yuriy A. Duan, Huigao Li, Xianglin Liao, Mingyi Tan, Rachel Lee Siew Wu, Lin Chen, Hongyu Fan, Hongjin Bai, Ping Lee, Pooi See Yang, Joel K. W. Shen, Ze Xiang |
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Article |
author |
Hu, Hailong Akimov, Yuriy A. Duan, Huigao Li, Xianglin Liao, Mingyi Tan, Rachel Lee Siew Wu, Lin Chen, Hongyu Fan, Hongjin Bai, Ping Lee, Pooi See Yang, Joel K. W. Shen, Ze Xiang |
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Hu, Hailong |
title |
Photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
title_short |
Photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
title_full |
Photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
title_fullStr |
Photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
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Photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
title_sort |
photoluminescence via gap plasmons between single silver nanowires and a thin gold film |
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2016 |
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https://hdl.handle.net/10356/83859 http://hdl.handle.net/10220/41505 |
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