title: Highly reproducible surface-enhanced Raman scattering substrate for detection of phenolic pollutants.
abstract: The ordering degree of nanostructures is the key to determining the uniformity of surface-enhanced Raman scattering (SERS). However, fabrication of large-area ordered nanostructures remains a challenge, especially with the ultrahigh-density (>1010cm-2). Here, we report a fabrication of large-area ultrahigh-density ordered Ag@Al2O3/Ag core-shell nanosphere (NS) arrays with tunable nanostructures. The ultrahigh-density (2.8 × 1010cm-2) ordered NS arrays over a large-area capability (diameter >4.0 cm) enable the uniform SERS signals with the relative standard deviation of less than 5%. The as-fabricated highly reproducible SERS substrate can be applied to detect trace phenolic pollutants in water. This work does not only provide a new route for synthesizing the ultrahigh-density ordered nanostructures, but also create a new class of SERS substrates with high sensitivity and excellent reproducibility.
authors.affiliation: Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, People's Republic of China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Zeng
authors.lastname: Dan Tang
authors.forename: Liwei
authors.initials: L
authors.lastname: Liu
authors.forename: Yin
authors.initials: Y
authors.lastname: Wang
authors.forename: Qingwei
authors.initials: Q
authors.lastname: Zhou
authors.forename: Shaoqiang
authors.initials: S
authors.lastname: Su
authors.forename: Die
authors.initials: D
authors.lastname: Hu
authors.forename: Bing
authors.initials: B
authors.lastname: Han
authors.forename: Mingliang
authors.initials: M
authors.lastname: Jin
authors.forename: Xianyu
authors.initials: X
authors.lastname: Ao
authors.forename: Runze
authors.initials: R
authors.lastname: Zhan
authors.forename: Xingsen
authors.initials: X
authors.lastname: Gao
authors.forename: Xubing
authors.initials: X
authors.lastname: Lu
authors.forename: Guofu
authors.initials: G
authors.lastname: Zhou
authors.forename: Stephan
authors.initials: S
authors.lastname: Senz
authors.forename: Zhang
authors.initials: Z
authors.lastname: Zhang
authors.forename: Junming
authors.initials: J
authors.lastname: Liu