A Flexible AgNPs-PDMS Substrate to Produce Ultrasensitive SERS Detection

Lin, Guanzhou; Zhang, Kenan; Huang, Yun; Jin, Shengxiao; Kang, Tian; Chen, Yusa; Li, Liye; Lu, Pei-Min; Wu, Wengang

doi:10.1109/nems51815.2021.9451437

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…When the gap between the nanoparticle is small enough (under 10 nm), and the electromagnetic field will be enhanced in the gap, suggesting that there will be SERS enhancement. According to previous work, the substrate self-assembled only by AgNPs also has a good detection effect, and it has shown that the detection performance of AgNPs-related substrates is relatively good [15,16]. In this study, 0.2 M glucose was used to synthesize AgNPs (See Supporting Information 1).…”

Section: Analysis Of Agnpsmentioning

confidence: 99%

A Surface Enhanced Raman Scattering (SERS) Sensing Method Enhanced by All-metal Metasurface

Lin,

Yang,

Zhang

et al. 2023

Phys. Scr.

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In this study, we developed a simple surface-enhanced Raman Scattering (SERS) composite substrate, which is composed of an all-metal metasurface and on-surface random distributing silver nanoparticles (AgNPs), to enhance the performance of SERS sensing. The metasurface is made up of gold (Au) nanopillars array on aluminum (Al) and can localize the electromagnetic field energy with a resonant absorption peak near the 630 nm wavelength which contributes to the SERS performance of AgNPs deposited into the structure. The composite substrate can significantly improve the sensing performance, and the SERS Enhancement Factor (EF) reaches 2.81×106. The substrate also has good stability and reproducibility. The research is based on the combination of Localized Surface Plasmon Resonance (LSPR) and SERS effects, providing a method and idea for improving the sensitivity of SERS detection, and achieves the trace detection of Rhodamine 6G (R6G) and Thiram at 10-10 M, respectively.

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Section: Analysis Of Agnpsmentioning

confidence: 99%

A Surface Enhanced Raman Scattering (SERS) Sensing Method Enhanced by All-metal Metasurface

Lin,

Yang,

Zhang

et al. 2023

Phys. Scr.

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“…[19][20][21][22][23][24] Most recently, APTES has been used to assemble Ag NPs on glass surfaces for SERS detection of rhodamine B and methylene blue 25 as well as assemble Ag NPs on polydimethylsiloxane for SERS analysis of thiram and rhodamine 6G on the apple epidermis. 26 Unlike glass, polydimethylsiloxane, or other silicon materials that require plasma treatment to make the surface hydrophilic for better binding of APTES, cellulose-based materials such as filter paper contains abundant hydroxyl groups that enable good binding of APTES. In addition, compared to other modifiers used in filter paper, such as sodium chloride (NaCl) 27 and polymethyl methacrylate, 28 which are adsorbed on filter paper by capillary forces, APTES was stably bound to the filter paper by chemical bonding.…”

Section: Introductionmentioning

confidence: 99%

“…3‐Aminopropyltriethoxysilane (APTES) is a silane coupling agent containing triethoxy and amine groups, which is widely used to improve adsorption properties via forming durable bonds between organic compounds and inorganic materials 19‐24 . Most recently, APTES has been used to assemble Ag NPs on glass surfaces for SERS detection of rhodamine B and methylene blue 25 as well as assemble Ag NPs on polydimethylsiloxane for SERS analysis of thiram and rhodamine 6G on the apple epidermis 26 . Unlike glass, polydimethylsiloxane, or other silicon materials that require plasma treatment to make the surface hydrophilic for better binding of APTES, cellulose‐based materials such as filter paper contains abundant hydroxyl groups that enable good binding of APTES.…”

Section: Introductionmentioning

confidence: 99%

Modified paper‐based substrates fabricated via electrostatic attraction of gold nanospheres for non‐destructive detection of pesticides based on surface‐enhanced Raman spectroscopy

et al. 2023

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BACKGROUNDFlexible surface‐enhanced Raman spectroscopy (SERS) substrates such as paper‐based substrates show great potential for rapid detection of residual chemicals on food surfaces. However, controlling the density and distribution of metallic nanoparticles adsorbed on the paper is still challenging.RESULTSThe amount of gold (Au) nanospheres (51 ± 4 nm) attached on the filter paper modified with 3‐aminopropyltriethoxysilane (APTES) was tunable, increasing as the level of APTES (2.5–15.0 g kg−1) applied for paper modification increased. Moreover, the Au nanospheres were relative evenly distributed on the filter paper modified with 2.5–10.0 g kg−1of APTES, which resulted in excellent intra‐ and inter‐reproducibility of SERS signals for pesticides including thiram, diquat dibromide, and paraquat dichloride (relative standard deviation = 2.2–10.1%). The modified paper‐based substrate could be used to detect as low as 0.05–0.2 mg L−1 of pesticides in standard solutions, and as low as 5–20 ng cm−2 of residual pesticides on apple skins with minimum sample pretreatment.CONCLUSIONThis paper‐based substrate with tunable feature for the density and distribution of nanoparticles is applicable for rapid SERS detection of residual pesticides in fruits and vegetables. © 2023 Society of Chemical Industry.

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A Flexible AgNPs-PDMS Substrate to Produce Ultrasensitive SERS Detection

Cited by 2 publications

References 20 publications

A Surface Enhanced Raman Scattering (SERS) Sensing Method Enhanced by All-metal Metasurface

A Surface Enhanced Raman Scattering (SERS) Sensing Method Enhanced by All-metal Metasurface

Modified paper‐based substrates fabricated via electrostatic attraction of gold nanospheres for non‐destructive detection of pesticides based on surface‐enhanced Raman spectroscopy

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