This letter demonstrates a possibility to overcome the polarization-dependent problem in surface enhanced Raman scattering (SERS) performance by two-dimensional (2D) sinusoidal silver grating. A reproducible SERS substrate with a large area can be easily fabricated by maskless laser interference photolithography. The polarization-independent SERS performance and SERS enhancement factor (EF) of this substrate are deduced by finite difference time domain and demonstrated by R6G SERS detection experiments. SERS performance of 2D sinusoidal grating is polarization-independent over the whole 360° and EF can be 5 orders of magnitude as possible. Moreover, this long-range SERS substrate can realize label-free SERS detection of 2,4,6-Trinitrotoluene (TNT).
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22 October 2018
Research Article|
October 24 2018
SERS polarization-independent performance of two-dimensional sinusoidal silver grating Available to Purchase
Cheng Xiao;
Cheng Xiao
a)
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
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Zhi-bin Chen;
Zhi-bin Chen
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
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Meng-ze Qin;
Meng-ze Qin
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
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Dong-xiao Zhang;
Dong-xiao Zhang
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
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Hao Wu
Hao Wu
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
Search for other works by this author on:
Cheng Xiao
a)
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
Zhi-bin Chen
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
Meng-ze Qin
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
Dong-xiao Zhang
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
Hao Wu
Department of Electronic and Optical Engineering, Shijiazhuang Campus of Army Engineering University
, Shijiazhuang 050003, China
Appl. Phys. Lett. 113, 171604 (2018)
Article history
Received:
July 18 2018
Accepted:
October 09 2018
Citation
Cheng Xiao, Zhi-bin Chen, Meng-ze Qin, Dong-xiao Zhang, Hao Wu; SERS polarization-independent performance of two-dimensional sinusoidal silver grating. Appl. Phys. Lett. 22 October 2018; 113 (17): 171604. https://doi.org/10.1063/1.5048826
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