Top-down patterning and self-assembly of flower-like gold arrays for surface enhanced Raman spectroscopy

Wang, Zhezhe; Lin, Lin; Huang, Pingping; Zhang, Zhiqiang

doi:10.1016/j.apsusc.2015.08.234

Cited by 16 publications

(5 citation statements)

References 23 publications

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“…The surface of the SERS substrate covered by a large area of metal nanoparticles will generate a high-density electromagnetic 'hot spot' distribution under external field excitation. The ordered structure of the metal nanoparticle substrate is a prerequisite for SERS enhancement [19][20][21]. Generally speaking, the enhancement reliability of SERS substrates prepared using large-scale equipment such as photolithography [22] or electron beam deposition [23] technology is ordinary.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale flexible Ag grating/AuNPs self-assembly hybrid for ultra-sensitive sensors

et al. 2021

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In this paper, Au nanoparticles (AuNPs) are prepared using wet chemical reduction transfer of dense AuNPs film by self-assembly to the surface of Ag grating, which is inverted from the inner DVD after evaporation. The Ag grating/AuNPs self-assembly hybrid substrate commonly used in surface-enhanced Raman scattering (SERS) research is produced. The coupling effect between AuNP-AuNP and AuNPs-Ag slugs can evidently enhance the local electric field. Experimental results show that the hybrid SERS substrate can detect 10−9 M Rh6G, and the enhancement factor reaches 4.4 × 105. This small, cheap hybrid substrate has enormous potential in the field of SERS sensing.

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Section: Introductionmentioning

confidence: 99%

Nanoscale flexible Ag grating/AuNPs self-assembly hybrid for ultra-sensitive sensors

et al. 2021

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“…In this work reported here, we fabricate the SERS-active substrate of a highly ordered dendrite Ag arrays by photosensitive sol-gel and electrochemical reaction self-assembly strategy [15]. The major advantages of this approach are the ability to make the target materials with photosensitive properties and not using photo resist as sensitive medium and the versatility to create micro-arrays with different dimensions simply and flexibility [16].…”

Section: Introductionmentioning

confidence: 97%

Self-assembled dendrite Ag arrays with tunable morphologies for surface-enhanced Raman scattering

Huang

Wang

Lin

et al. 2016

Applied Surface Science

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“…Nanoflowers have a representative structure of these 3-D plasmonic nanocrystals, presenting ultra-sensitive SERS signals. , For the construction of flower-like structures, many synthesis methods have been reported. For example, Guo et al proposed a rapid synthesis route to deposit Au nanoflowers on the surface of tin-doped indium oxide glass by the electrochemical deposition method .…”

Section: Introductionmentioning

confidence: 99%

High-Yield Gold Nanohydrangeas on Three-Dimensional Carbon Nanotube Foams for Surface-Enhanced Raman Scattering Sensors

Yang

Zhang²,

Miao³

et al. 2023

ACS Omega

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Recently, carbon nanomaterial-supported plasmonic nanocrystals used as high-performance surface-enhanced Raman scattering (SERS) substrates have attracted increasing attention due to their ultra-high sensitivity of detection. However, most of the work focuses on the design of 2-D planar substrates with traditional plasmonic structures, such as nanoparticles, nanorods, nanowires, and so forth. Here, we report a novel strategy for the preparation of high-yield Au nanohydrangeas on three-dimensional porous polydopamine (PDA)/polyvinyl alcohol (PVA)/carbon nanotube (CNT) foams. The structures and growth mechanisms of these specific Au nanocrystals are systematically investigated. PDA plays the role of both a reducing agent as well as an anchoring site for Au nanohydrangeas’ growth. We also show that the ratio of surfactant KBr to the gold precursor (HAuCl4) is key to obtain these structures in a manner of high production. Moreover, the substrate of the CNT foam–Au nanohydrangea hybrid can be employed as SERS sensors and can detect the analytes down to 10–9 M.

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Top-down patterning and self-assembly of flower-like gold arrays for surface enhanced Raman spectroscopy

Cited by 16 publications

References 23 publications

Nanoscale flexible Ag grating/AuNPs self-assembly hybrid for ultra-sensitive sensors

Nanoscale flexible Ag grating/AuNPs self-assembly hybrid for ultra-sensitive sensors

Self-assembled dendrite Ag arrays with tunable morphologies for surface-enhanced Raman scattering

High-Yield Gold Nanohydrangeas on Three-Dimensional Carbon Nanotube Foams for Surface-Enhanced Raman Scattering Sensors

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