A porous Au-Ag hybrid nanoparticle array with broadband absorption and high-density hotspots for stable SERS analysis | |
Li, Kuanguo1,2; Liu, Guangju1; Zhang, Sheng1; Dai, Yanqiu3; Ghafoor, Sonia3; Huang, Wanxia1; Zu, Zewen1; Lu, Yonghua3,4 | |
刊名 | Nanoscale |
2019-05-21 | |
卷号 | 11期号:19页码:9587-9592 |
ISSN号 | 20403364;20403372 |
DOI | 10.1039/c9nr01744e |
产权排序 | 1 |
英文摘要 | Constructing high-density hotspots is of crucial importance in surface enhanced Raman scattering (SERS). In this paper, we present a large-area and broadband porous Au-Ag hybrid nanoparticle array which was fabricated by an ultra-thin alumina mask (UTAM) technique incorporated with annealing and galvanic replacement techniques. Experimental results and numerical simulations demonstrated that the porous Au-Ag hybrid nanoparticle array possessed enormous hotspots for high sensitivity, uniformity, and stability in SERS analysis. A large Raman enhancement factor of 2.2 × 107 was achieved with a relative standard deviation (RSD) of 7.7%, leading to excellent reliability for Raman detection. Furthermore, this novel substrate exhibited a long shelf time in an ambient environment and promising practical applications in many SERS-based quantitative analytical and biomedical sensing techniques. © 2019 The Royal Society of Chemistry. |
语种 | 英语 |
出版者 | Royal Society of Chemistry |
WOS记录号 | WOS:000468868200034 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/31520] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Li, Kuanguo |
作者单位 | 1.College of Physics and Electronics Information and Anhui Province, Key Laboratory of Optoelectric Materials Science and Technology, Anhui Normal University, Wuhu Anhui; 241000, China; 2.State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xian Shanxi; 710068, China; 3.Department of Optics and Optical Engineering, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei Anhui; 230026, China; 4.Advanced Laser Technology Laboratory of Anhui Province, Hefei Anhui; 230026, China |
推荐引用方式 GB/T 7714 | Li, Kuanguo,Liu, Guangju,Zhang, Sheng,et al. A porous Au-Ag hybrid nanoparticle array with broadband absorption and high-density hotspots for stable SERS analysis[J]. Nanoscale,2019,11(19):9587-9592. |
APA | Li, Kuanguo.,Liu, Guangju.,Zhang, Sheng.,Dai, Yanqiu.,Ghafoor, Sonia.,...&Lu, Yonghua.(2019).A porous Au-Ag hybrid nanoparticle array with broadband absorption and high-density hotspots for stable SERS analysis.Nanoscale,11(19),9587-9592. |
MLA | Li, Kuanguo,et al."A porous Au-Ag hybrid nanoparticle array with broadband absorption and high-density hotspots for stable SERS analysis".Nanoscale 11.19(2019):9587-9592. |
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