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    Journals >Photonics Research >Volume 6 >Issue 6 >Page 485 > Article
    • Photonics Research
    • Vol. 6, Issue 6, 485 (2018)
    Sensitivity-enhanced surface plasmon resonance sensor utilizing a tungsten disulfide (WS2) nanosheets overlayer
    Hao Wang1,†, Hui Zhang1,4,†, Jiangli Dong1,2, Shiqi Hu1..., Wenguo Zhu3, Wentao Qiu3, Huihui Lu1, Jianhui Yu1,3, Heyuan Guan1,3, Shecheng Gao2, Zhaohui Li1,5, Weiping Liu2, Miao He4, Jun Zhang1, Zhe Chen1,3 and Yunhan Luo1,2,3,*|Show fewer author(s)
    Author Affiliations
  • 1Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, China
  • 2Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China
  • 3Key Laboratory of Visible Light Communications of Guangzhou, Jinan University, Guangzhou 510632, China
  • 4School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • 5State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
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    DOI: 10.1364/PRJ.6.000485 Cite this Article Set citation alerts
    Hao Wang, Hui Zhang, Jiangli Dong, Shiqi Hu, Wenguo Zhu, Wentao Qiu, Huihui Lu, Jianhui Yu, Heyuan Guan, Shecheng Gao, Zhaohui Li, Weiping Liu, Miao He, Jun Zhang, Zhe Chen, Yunhan Luo, "Sensitivity-enhanced surface plasmon resonance sensor utilizing a tungsten disulfide (WS2) nanosheets overlayer," Photonics Res. 6, 485 (2018) Copy Citation Text show less
    Raman spectrum of the WS2 layers on the SPR sensor structure.
    Fig. 1. Raman spectrum of the WS2 layers on the SPR sensor structure.
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    (a) WS2 surface morphology image of the SPR sensor. The WS2 cross section SEM images after different numbers of times of repeated post-coating: (b) one; (c) two; (d) three; (e) four; (f) five.
    Fig. 2. (a) WS2 surface morphology image of the SPR sensor. The WS2 cross section SEM images after different numbers of times of repeated post-coating: (b) one; (c) two; (d) three; (e) four; (f) five.
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    Experimental setup for RI sensing measurement.
    Fig. 3. Experimental setup for RI sensing measurement.
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    Reflectance spectra of the WS2-SPR sensors corresponding to different post-coating times: (a) Without coating; (b) one; (c) two; (d) three; (e) four; (f) five. The refractive index of the sensing analyte changes from 1.333 to 1.360.
    Fig. 4. Reflectance spectra of the WS2-SPR sensors corresponding to different post-coating times: (a) Without coating; (b) one; (c) two; (d) three; (e) four; (f) five. The refractive index of the sensing analyte changes from 1.333 to 1.360.
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    Experimental variation of shift in the resonance wavelength with refractive index under different times of WS2 nanosheet post-coating: (a) Without coating; (b) one; (c) two; (d) three; (e) four; (f) five.
    Fig. 5. Experimental variation of shift in the resonance wavelength with refractive index under different times of WS2 nanosheet post-coating: (a) Without coating; (b) one; (c) two; (d) three; (e) four; (f) five.
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    (a) Sensitivity and (b) figure of merit comparison for different number of times of WS2 nanosheets coatings.
    Fig. 6. (a) Sensitivity and (b) figure of merit comparison for different number of times of WS2 nanosheets coatings.
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    (a) Experimental variation of shift in the resonance wavelength with surrounding refractive index ranging from 1.333 to 1.40. (b) Evanescent electric field distribution at the resonance wavelength within the prism/gold film (50 nm)/analyte (n=1.36) structure.
    Fig. 7. (a) Experimental variation of shift in the resonance wavelength with surrounding refractive index ranging from 1.333 to 1.40. (b) Evanescent electric field distribution at the resonance wavelength within the prism/gold film (50 nm)/analyte (n=1.36) structure.
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    Hao Wang, Hui Zhang, Jiangli Dong, Shiqi Hu, Wenguo Zhu, Wentao Qiu, Huihui Lu, Jianhui Yu, Heyuan Guan, Shecheng Gao, Zhaohui Li, Weiping Liu, Miao He, Jun Zhang, Zhe Chen, Yunhan Luo, "Sensitivity-enhanced surface plasmon resonance sensor utilizing a tungsten disulfide (WS2) nanosheets overlayer," Photonics Res. 6, 485 (2018)
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