CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Large-scale uniform Au nanodisk arrays fabricated via x-ray interference lithography for reproducible and sensitive SERS substrate
Zhang, PP; Yang, SM; Wang, LS; Zhao, J; Zhu, ZC; Liu, B; Zhong, J; Sun, XH; xhsun@suda.edu.cn
2014
Source PublicationNANOTECHNOLOGY
ISSN0957-4484
Volume25Issue:24
AbstractLarge-scale Au nanodisk arrays on Si substrate are successfully fabricated via x-ray interference lithography and followed by electron-beam vapor deposition. The Au nanodisk arrays exhibit a significant, uniform, and reproducible surface enhancement on Raman scattering signal, which enables the detection of R6G as low as 10-8M with an enhancement factor of 106. Importantly, the Au nanodisk arrays SERS-active substrates with uniformly high sensitivity also have high reproducibility and stability. The diameters of the nanodisks and the inter-disk distance can be simply optimized to obtain high enhancement in Raman signal by varying exposure time and development time in XIL process. The electric fields of the Au nanodisks with various diameters and inter-disk distance simulated by the finite difference time domain (FDTD) techniques further confirm that the Raman signal enhancement of Au nanodisks is determined by the diameters of nanodisks and the inter-disk distance of nanodisks. The Au/Ag double-layer bimetal nanodisk arrays are also fabricated which show a significant increase in the Raman signal enhancement than that of the Au nanodisk arrays. XIL nanofabrication appears to be a feasible approach to prepare uniform and reproducible SERS-active substrates with high sensitivity for practical SERS applications.
KeywordEnhanced Raman-scattering Nanosphere Lithography Silver Nanoparticles Gold Nanoparticles Single-molecule Nanostructures Spectroscopy Dependence Nanowires Surfaces
Indexed BySCI
Language英语
WOS IDWOS:000337173600005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14214
Collection中科院上海应用物理研究所2011-2020年
Corresponding Authorxhsun@suda.edu.cn
Recommended Citation
GB/T 7714
Zhang, PP,Yang, SM,Wang, LS,et al. Large-scale uniform Au nanodisk arrays fabricated via x-ray interference lithography for reproducible and sensitive SERS substrate[J]. NANOTECHNOLOGY,2014,25(24).
APA Zhang, PP.,Yang, SM.,Wang, LS.,Zhao, J.,Zhu, ZC.,...&xhsun@suda.edu.cn.(2014).Large-scale uniform Au nanodisk arrays fabricated via x-ray interference lithography for reproducible and sensitive SERS substrate.NANOTECHNOLOGY,25(24).
MLA Zhang, PP,et al."Large-scale uniform Au nanodisk arrays fabricated via x-ray interference lithography for reproducible and sensitive SERS substrate".NANOTECHNOLOGY 25.24(2014).
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