Sensitive, reproducible, and stable 3D plasmonic hybrids with bilayer WS2 as nanospacer for SERS analysis

Lu, Zhengyi1; Si, Haipeng2; Li, Zhen1; Yu, Jing1; Liu, Yanjun3; Feng, Dejun4; Zhang, Chao1; Yang, Wen1; Man, Baoyuan1; Jiang, Shouzhen1

2018-08-20

10.1364/OE.26.021626

OPTICS EXPRESS   影响因子和分区

1094-4087

The highly enhanced local electromagnetic field occurring through nanometer gap between the plamonic nanostructures provides the dominant contribution in surface enhancement Raman scattering (SERS) enhancement. Thence, we designed the remarkable SERS platform (AuNPs/WS2@AuNPs hybrids) by introducing bilayer WS2 film as the precise nanospacer. Bilayer WS2 film can realize the facile and tight combination with AuNPs via the thermal decomposition approach. Dense three-dimension (3D) hot spots provided by this hybrid plasmonic nanostructures are responsible for the extremely satisfying SERS performances. Using rhodamine 6G (R6G) as the probe molecules, the AuNPs/WS2@AuNPs hybrids perform the excellent sensitivity with the minimum detectable concentration as low as 10(-11) M. Uniform and reproducible SERS signals illustrate that the synthesized SERS hybrids perform the splendid spot-to-spot reproducibility (RSD similar to 5.4%) and substrate-to-substrate reproducibility (RSD similar to 5.7%). The stability of AuNPs and the protection of WS2 film endow this hybrid plasmonic nanostructures with the brilliant anti-oxidation stability. Moreover. the enhanced electric field distribution simulated with the COMSOL software proves the remarkable SERS performance in theory. Therefore, AuNPs/WS2@AuNPs substrate not only widens the SERS research filed of WS2 , but also shows vast potential as excellent SERS sensor for practical applicability. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

SCI ; EI

英语

其他

Department of Science and Technology of Shandong Province[J18KZ011]

Optics

Optics

WOS:000442136200021

OPTICAL SOC AMER

20183405731017

Ablation ; Decomposition ; Electric fields ; Electromagnetic fields ; Nanostructures ; Plasmonics ; Plasmons ; Substrates ; Synthesis (chemical) ; Tungsten compounds

Heat Transfer:641.2 ; Electricity and Magnetism:701 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Atomic and Molecular Physics:931.3 ; Solid State Physics:933

PHYSICS

Web of Science

1.Shandong Normal Univ, Sch Phys & Elect, Jinan 250014, Shandong, Peoples R China
2.Shandong Univ, Qilu Hosp, Dept Orthopaed, Jinan 250012, Shandong, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
4.Shandong Univ, Suzhou Res Inst, Suzhou 215123, Peoples R China

Lu, Zhengyi,Si, Haipeng,Li, Zhen,et al. Sensitive, reproducible, and stable 3D plasmonic hybrids with bilayer WS2 as nanospacer for SERS analysis[J]. OPTICS EXPRESS,2018,26(17):21626-21641.

Lu, Zhengyi.,Si, Haipeng.,Li, Zhen.,Yu, Jing.,Liu, Yanjun.,...&Jiang, Shouzhen.(2018).Sensitive, reproducible, and stable 3D plasmonic hybrids with bilayer WS2 as nanospacer for SERS analysis.OPTICS EXPRESS,26(17),21626-21641.

Lu, Zhengyi,et al."Sensitive, reproducible, and stable 3D plasmonic hybrids with bilayer WS2 as nanospacer for SERS analysis".OPTICS EXPRESS 26.17(2018):21626-21641.