Highly ordered Au-decorated Ag nanorod arrays as an ultrasensitive and reusable substrate for surface enhanced Raman scattering

Dan, Yaqian; Zhong, Chengquan; Zhu, Huanwen; Wang, Jun

doi:10.1016/j.colsurfa.2018.10.040

Cited by 13 publications

(7 citation statements)

References 33 publications

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“…89 For practical and extensive applications, SERS substrates not only require robust signal enhancement but also the reproducibility of SERS signals, which can be achieved by highly ordered arrays of SERS substrates due to the homogeneous distribution of hot spots. 76,90 To assess the uniformity and reproducibility of SERS signals, a certain number of acquisition points of SERS substrates are generally randomly selected for repeat Raman testing. The intensities of the main characteristic peaks are selected for calculation, enabling quantification of the dispersion of these peak intensities and assessment of their relative standard deviation (RSD).…”

Section: Advantages Of Aao-based Sers Substratesmentioning

confidence: 99%

“…In addition, 3D array SERS substrates can be easily fabricated via AAO templates that possess large surface areas, which provide more hot spots, especially at the tips, and adequate absorption sites for detecting molecules in SERS substrates with sensitive and accurate SERS signals . For practical and extensive applications, SERS substrates not only require robust signal enhancement but also the reproducibility of SERS signals, which can be achieved by highly ordered arrays of SERS substrates due to the homogeneous distribution of hot spots. , To assess the uniformity and reproducibility of SERS signals, a certain number of acquisition points of SERS substrates are generally randomly selected for repeat Raman testing. The intensities of the main characteristic peaks are selected for calculation, enabling quantification of the dispersion of these peak intensities and assessment of their relative standard deviation (RSD). , Compared to commercially available SERS substrates with RSD < 20%, AAO-based nanoarrays with superior homogeneity enable more uniform distribution of adsorbed analytes .…”

Section: Enhancement Mechanisms and Advantages Of Aao-based Sers Subs...mentioning

confidence: 99%

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Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Wu,

Sha,

et al. 2024

ACS Appl. Nano Mater.

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As a promising spectroscopic technique, surface enhanced raman spectroscopy (SERS) has been intensively used in bio/chemical sensing, attributing to its unique advantages of ultrasensitive and accurate detection of trace amounts of analytes, high specific fingerprint-like features, fast response, and noninvasive sensing. The robustness and consistency of SERS signals in practical analytical applications highly rely on the composition, structural morphology, and uniformity of SERS substrates. These factors play a pivotal role in determining the intensity and reproducibility of the detected signals. SERS substrates based on ordered nanostructures that are fabricated from anodic aluminum oxide (AAO)-templateassisted approaches are of significant interest due to their cost effectiveness, scalability, precise structural control, and exceptionally ordered features. In this review, recent progress in SERS substrates with high sensitivity and reproducibility prepared from AAO templates is highlighted. We emphasize the optimization strategies toward achieving efficient SERS-active substrates by fine-tuning the size, composition, and morphology of AAO-derived ordered nanostructures. Furthermore, we delve into the discussion of flexible and smart SERS substrates, while also exploring key aspects pertinent to further amplifying SERS signals. Overall, this review aims to offer insights into the future integration of the AAO templates technique with SERS, providing crucial perspectives for forthcoming research in this field.

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Section: Advantages Of Aao-based Sers Substratesmentioning

confidence: 99%

Section: Enhancement Mechanisms and Advantages Of Aao-based Sers Subs...mentioning

confidence: 99%

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Wu,

Sha,

et al. 2024

ACS Appl. Nano Mater.

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“…Dan et al used AAO as a template for Ag nanorod array fabrication and then removed the oxide and decorated nanorods by Au nanoparticles [88]. As-prepared substrate was used as a SERS substrate for R6G.…”

Section: Anodic Oxides Used As a Sers Substratementioning

confidence: 99%

An Overview of Anodic Oxides Derived Advanced Nanocomposites Substrate for Surface Enhance Raman Spectroscopy

Michalska-Domańska¹

2020

Assorted Dimensional Reconfigurable Materials

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Surface-enhanced Raman spectroscopy (SERS) is an analytical technique, which allows to identify traces of chemical or biological substances in many field, like pharmaceutical and food industries, homeland security, nanosensors, or environmental protection. The analytes are identified based on their vibrational spectra, unique for a given compound. The advantage of SERS is effective qualitative analysis of trace amounts of analyte, but the disadvantages are stability of substrate and repeatability of measurements. The challenge is to improve SERS substrates to minimize these drawbacks. Nowadays high-precision electron beam lithography or focused ion beam is used in SERS substrate fabrication, which is impractical for large-scale production. In recent years, researchers' attention has focused on porous anodic oxides, with inexpensive and scalable production method, as potential materials for SERS substrates. This chapter will discuss the progress of anodic oxides used as a SERS substrate, and the brief description of conventional SERS substrate fabrication methods will be presented.

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“…Anodic aluminium oxide (AAO) film with highly ordered nanopore structures has attracted scientific and technological interest due to its widespread applications, such as in decorative coatings, [ 1 ] functional materials for developing nanoscale devices, [ 2–5 ] superhydrophilic [ 6 ] and superhydrophobic surfaces, [ 7 ] photonic crystals, [ 8 ] Bragg reflectors, [ 9 ] and optical biosensing. [ 10 ] In this context, the development of technology for AAO films with specified optical parameters has become a pressing issue that needs to be solved, as their optical properties affect the parameters of optical devices and metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence properties of anodic aluminium oxide films formed in a mixture of malonic acid and oxalic acid

Liu

Xiang

et al. 2022

Luminescence

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In this work, porous anodic aluminium oxide (AAO) films were fabricated by anodization in an electrolyte mixture with various concentration ratios of malonic acid and oxalic acid at room temperature. The photoluminescence (PL) properties of the AAO films before and after annealing from 300°C to 650°C in air or vacuum conditions were investigated, showing a strong PL band in the range 300–550 nm. We observed a weak PL in the AAO film formed in the malonic acid electrolyte, whereas the films fabricated using an electrolyte mixture showed strong PL emissions, exhibiting a maximum. The broad PL band was decomposed into three Gaussian sub‐bands, in which the first two sub‐bands could be attributed to the luminescence centre oxygen vacancies (F+ and F defect centres), whereas the latter transformed from malonic impurities and oxalic impurities. More interestingly, the redshift of the PL bands occurred with increasing oxalic acid concentration, and the PL wavelength and intensity could be modulated by varying the concentration ratios in the malonic acid and oxalic acid electrolyte mixture.

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Highly ordered Au-decorated Ag nanorod arrays as an ultrasensitive and reusable substrate for surface enhanced Raman scattering

Cited by 13 publications

References 33 publications

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

An Overview of Anodic Oxides Derived Advanced Nanocomposites Substrate for Surface Enhance Raman Spectroscopy

Photoluminescence properties of anodic aluminium oxide films formed in a mixture of malonic acid and oxalic acid

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