Chin. Phys. Lett.  2018, Vol. 35 Issue (11): 114201    DOI: 10.1088/0256-307X/35/11/114201
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Optical Tunability of Silver-Dielectric-Silver Multi-Layered Cylindrical Nanotubes Using Quasi-Static Approximation
Zhao-Wang Wu, Ye-Wan Ma**, Li-Hua Zhang, Xun-Chang Yin, Sheng-Bao Zhan
School of Physics and Electrical Engineering, Anqing Normal University, Anqing 246133
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Zhao-Wang Wu, Ye-Wan Ma, Li-Hua Zhang et al  2018 Chin. Phys. Lett. 35 114201
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Abstract Local surface plasmon resonances (LSPRs) of silver-dielectric-silver multi-layered (SDS-ML) nanotubes are studied by theoretical calculations. Based on quasi-static approximation, the absorption cross section of SDS-ML nanotubes is plotted as a function of wavelength. The results show that SDS-ML nanotubes exhibit strong coupling between the cylindrical silver and nanotubes. The absorption spectra of LSPRs are strongly influenced by changing the radius of the inner core and outer nanotube shell. The longer wavelength is red-shifted by increasing the radius of the inner core and outer shell, while the short wavelength shows the opposite properties. These phenomena are explained by the plasmon hybridization theory. In addition, for clarity, the distributions of electric field intensity at their plasmon resonance wavelengths are also studied.
Received: 10 May 2018      Published: 23 October 2018
PACS:  42.25.-p (Wave optics)  
  42.25.Hz (Interference)  
  78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)  
Fund: Supported by the Natural Science Foundation of Anhui Province under Grant Nos 1808085MA20, 1808085MF189, 1708085MA10 and 1608085MA21, and the Excellent Young Talents in University of Anhui Province under Grant Nos gxyq2017027, KJ2018A0366 and KJ2015ZD28.
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https://cpl.iphy.ac.cn/10.1088/0256-307X/35/11/114201       OR      https://cpl.iphy.ac.cn/Y2018/V35/I11/114201
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Zhao-Wang Wu
Ye-Wan Ma
Li-Hua Zhang
Xun-Chang Yin
Sheng-Bao Zhan
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