Multiscale structure enabled effective plasmon coupling and molecular enriching for SERS detection

Xu, Jihua; Si, Yuan; Li, Zhen; Jiang, Shouzhen; Xiu, Xianwu; Lei, Fengcai; Du, Xin; Man, Baoyuan; Yu, Jing; Zhang, Chao

doi:10.1016/j.apsusc.2020.148908

Cited by 19 publications

(24 citation statements)

References 35 publications

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“…From these results, it can be observed that the as-prepared flexible SERS substrates exhibit outstanding uniformity and excellent reproducibility. Moreover, comparisons of the limits of detection, enhancement factors and signal reproducibilities between the Ag NPs@W-PDMS SERS substrate and other flexible SERS substrates are shown in Table S1, indicating that the Ag NPs@W-PDMS SERS substrate has excellent performance featuring a large enhancement factor, large-scale uniformity, and excellent spectral reproducibility. − …”

Section: Resultsmentioning

confidence: 99%

3D Flexible SERS Substrates Integrated with a Portable Raman Analyzer and Wireless Communication for Point-of-Care Application

Zhang

Zhao

et al. 2022

ACS Appl. Mater. Interfaces

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With the development of flexible surface-enhanced Raman spectroscopy (SERS) substrates that can realize rapid in situ detection, the SERS technique accompanied by miniaturized Raman spectrometers holds great promise for point-of-care testing (POCT). For an in situ detection strategy, constructing high-performance flexible and transparent SERS substrates through a facile and cost-effective fabrication method is critically important. Herein, we present a simple method for fabricating a large-area flexible and transparent SERS substrate consisting of a silver-nanoparticle-grafted wrinkled polydimethylsiloxane (Ag NPs@W-PDMS) film, using a surface-wrinkling technique and magnetron sputtering technology. By characterizing rhodamine 6G as a probe molecule with a portable Raman spectrometer, the flexible SERS substrate shows a low detection limit (10–7 M), a high enhancement factor (6.11 × 106), and excellent spot–spot and batch–batch reproducibilities (9.0% and 4.2%, respectively). Moreover, the Ag NPs@W-PDMS substrate maintains high SERS activity under bending and twisting mechanical deformations of over 100 cycles, as well as storage in air for 30 days. To evaluate its practical feasibility, in situ detection of malachite green on apple and tomato peels is performed with a detection limit of 10–6 M. In addition, for point-of-care analysis, we develop a wireless transmission system to transmit the collected SERS spectral data to a computer in real time for signal processing and analysis. Therefore, the proposed Ag NPs@W-PDMS SERS substrate fabricated through a simple and mass-producible method, combined with the utilization of a portable Raman spectrometer and wireless communication, offers a promising opportunity to extend the SERS technique from the laboratory to POCT applications.

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Section: Resultsmentioning

confidence: 99%

3D Flexible SERS Substrates Integrated with a Portable Raman Analyzer and Wireless Communication for Point-of-Care Application

Zhang

Zhao

et al. 2022

ACS Appl. Mater. Interfaces

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“…The substrate was tested for uniformity using SERS mapping of R6G signals in a large area. Twenty random points on the substrate were evaluated to determine the RSD of characteristic Raman peaks of R6G (613, 774 and 1365 cm –1 ), which were 6.76, 7.44 and 8.57%, respectively 51 . In addition to the high uniformity, the method was capable of differentiating R6G, CV and congo red (CR) in a mixture of the three.…”

Section: Sers Nanosubstratesmentioning

confidence: 99%

“…In addition to the high uniformity, the method was capable of differentiating R6G, CV and congo red (CR) in a mixture of the three. This substrate shows immense potential for the uniform detection and identification of synthetic dye molecules 51 …”

Section: Sers Nanosubstratesmentioning

confidence: 99%

“…This substrate shows immense potential for the uniform detection and identification of synthetic dye molecules. 51 Nanoparticle arrays are sometimes used as a technique of arranging nanomaterials into a well-ordered system that exhibits desirable properties. Their properties can be controlled by engineering the…”

Section: Shape Size and Arrangement Of Nanoparticlesmentioning

confidence: 99%

“…NPL drop cast onto Au-functionalized glass slides 10 μg/mL [115] Silver nanoparticles on regenerated cellulose Crystal violet and polystyrene Analyte deposited on SERS substrate 0.1 mg/mL [62] Silver @ gold nanostars @ anodized aluminum oxide Polystyrene Tap, river and sea water 0.05 mg/g [116] Gold nanoparticles Polystyrene PS spiked in water - [114] Gold nanoparticles @ 4-MBN Melamine Milk 10 nM [265] Silver nanoparticles S. aureus and E. coli Substrate - [235] Gold modified magnetic nanoparticles Salmonella Spiked: chicken and milk Natural: Milk, tap water, poor water 4 cfu/mL [229] Silver/copper oxide nanowires/pyramidal PDMS Rhodamine 6G, crystal violet and congo red SERS substrate surface 10 -9 , 10 -8 and 10 -7 M [51] Graphene oxide nanosheet coated with silver and gold nanoparticles Beta-carotene and malachite green Analyte deposited on SERS substrate <1 mg/L [43] Silver nanoparticles -grafted silicon nanocones Rhodamine 6G, crystal violet, melamine, methyl parathion AgNPs/SiNC platform, lake water, milk and tap water 10 -14 , 10 -9 , 10 -7 and 10 -7 M [49] Sulphur doped MoO2 nanospheres Rhodamine 6G, rhodamine B, crystal violet Dropped onto glass slide 1 × 10 -9 , 1 × 10 -10 and 1 × 10 -8 M [266] Silver-doped hydroxyapatite nanocomposite…”

Section: Introductionmentioning

confidence: 99%

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Applications of surface‐enhanced Raman spectroscopy in environmental detection

Terry

Sanders

Potoff

et al. 2022

Analytical Science Advances

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As the human population grows, the anthropogenic impacts from various agricultural and industrial processes produce unwanted contaminants in the environment. The accurate, sensitive and rapid detection of such contaminants is vital for human health and safety. Surface-enhanced Raman spectroscopy (SERS) is a valuable analytical tool with wide applications in environmental contaminant monitoring. The aim of this review is to summarize recent advancements within SERS research as it applies to environmental detection, with a focus on research published or accessible from January 2021 through December 2021 including early-access publications. Our goal is to provide a wide breadth of information that can be used to provide background knowledge of the field, as well as inform and encourage further development of SERS techniques in protecting environmental quality and safety. Specifically, we highlight the characteristics of effective SERS nanosubstrates, and explore methods for the SERS detection of inorganic, organic, and biological contaminants including heavy metals, pharmaceuticals, plastic particles, synthetic dyes, pesticides, viruses, bacteria and mycotoxins. We also discuss the current limitations of SERS technologies in environmental detection and propose several avenues for future investigation. We encourage researchers to fill in the identified gaps so that SERS can be implemented in a real-world environment more effectively and efficiently, ultimately providing reliable and timely data to help and make science-based strategies and policies to protect environmental safety and public health.

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Surface-Enhanced Raman Spectroscopy (SERS)-Based Sensors: Pioneering Technique for Future Environmental Remediation

Shameer,

Anand,

Parambath

et al. 2024

Plasmonics

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Multiscale structure enabled effective plasmon coupling and molecular enriching for SERS detection

Cited by 19 publications

References 35 publications

3D Flexible SERS Substrates Integrated with a Portable Raman Analyzer and Wireless Communication for Point-of-Care Application

3D Flexible SERS Substrates Integrated with a Portable Raman Analyzer and Wireless Communication for Point-of-Care Application

Applications of surface‐enhanced Raman spectroscopy in environmental detection

Surface-Enhanced Raman Spectroscopy (SERS)-Based Sensors: Pioneering Technique for Future Environmental Remediation

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