A SERS platform based on diatomite modified by gold nanoparticles using a combination of layer-by-layer assembly and a freezing-induced loading method

Cvjetinovic, Julijana; Merdalimova, Anastasiia; Kirsanova, Maria A.; Somov, Pavel A.; Nozdriukhin, Daniil; Salimon, Alexey I.; Korsunsky, Alexander M.; Gorin, Dmitry A.

doi:10.1039/d2cp00647b

Cited by 8 publications

(2 citation statements)

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“…To further simplify the fabrication of the SERS substrate, some biological or commercial substrates were applied to be a simple SERS substrate, such as a cuttlebone-derived organic matrix [ 98 ], diatomite [ 138 ], beetle wings [ 139 ], cotton swabs [ 140 , 141 ], and filter paper [ 142 ]. The biological materials usually have complex structures such as the “wall-septa” on the cuttlebone [ 98 ], 3D periodic microstructures on the beetle wings, and the micro porous structure on the diatomite are naturally formed micro-to-nano structures that can be directly decorated with MNPs [ 98 , 139 ] or that used to be the mold to translate the nanostructure to PDMS [ 139 ].…”

Section: Design Fabrication and Applications Of Sersmentioning

confidence: 99%

Design, Fabrication, and Applications of SERS Substrates for Food Safety Detection: Review

Lin

et al. 2023

Micromachines

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Sustainable and safe food is an important issue worldwide, and it depends on cost-effective analysis tools with good sensitivity and reality. However, traditional standard chemical methods of food safety detection, such as high-performance liquid chromatography (HPLC), gas chromatography (GC), and tandem mass spectrometry (MS), have the disadvantages of high cost and long testing time. Those disadvantages have prevented people from obtaining sufficient risk information to confirm the safety of their products. In addition, food safety testing, such as the bioassay method, often results in false positives or false negatives due to little rigor preprocessing of samples. So far, food safety analysis currently relies on the enzyme-linked immunosorbent assay (ELISA), polymerase chain reaction (PCR), HPLC, GC, UV-visible spectrophotometry, and MS, all of which require significant time to train qualified food safety testing laboratory operators. These factors have hindered the development of rapid food safety monitoring systems, especially in remote areas or areas with a relative lack of testing resources. Surface-enhanced Raman spectroscopy (SERS) has emerged as one of the tools of choice for food safety testing that can overcome these dilemmas over the past decades. SERS offers advantages over chromatographic mass spectrometry analysis due to its portability, non-destructive nature, and lower cost implications. However, as it currently stands, Raman spectroscopy is a supplemental tool in chemical analysis, reinforcing and enhancing the completeness and coverage of the food safety analysis system. SERS combines portability with non-destructive and cheaper detection costs to gain an advantage over chromatographic mass spectrometry analysis. SERS has encountered many challenges in moving toward regulatory applications in food safety, such as quantitative accuracy, poor reproducibility, and instability of large molecule detection. As a result, the reality of SERS, as a screening tool for regulatory announcements worldwide, is still uncommon. In this review article, we have compiled the current designs and fabrications of SERS substrates for food safety detection to unify all the requirements and the opportunities to overcome these challenges. This review is expected to improve the interest in the sensing field of SERS and facilitate the SERS applications in food safety detection in the future.

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Section: Design Fabrication and Applications Of Sersmentioning

confidence: 99%

Design, Fabrication, and Applications of SERS Substrates for Food Safety Detection: Review

Lin

et al. 2023

Micromachines

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“…The requirements of small size, specific optical properties, low density and high strength are important for numerous applications, especially in silicon photonics 10,11 and for microelectromechanical systems (MEMS) 12,13 . The interest in diatom frustules as prototypical photonic crystals for microelectronic technology arose relatively recently and has already been reflected in a number of high profile publications [14][15][16][17][18][19][20] . Dimensional (e.g.…”

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confidence: 99%

Revealing the static and dynamic nanomechanical properties of diatom frustules—Nature's glass lace

Cvjetinovic

Luchkin

Statnik

et al. 2023

Sci Rep

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Diatoms are single cell microalgae enclosed in silica exoskeletons (frustules) that provide inspiration for advanced hybrid nanostructure designs mimicking multi-scale porosity to achieve outstanding mechanical and optical properties. Interrogating the structure and properties of diatoms down to nanometer scale leads to breakthrough advances reported here in the nanomechanical characterization of Coscinodiscus oculus-iridis diatom pure silica frustules, as well as of air-dried and wet cells with organic content. Static and dynamic mode Atomic Force Microscopy (AFM) and in-SEM nanoindentation revealed the peculiarities of diatom response with separate contributions from material nanoscale behavior and membrane deformation of the entire valve. Significant differences in the nanomechanical properties of the different frustule layers were observed. Furthermore, the deformation response depends strongly on silica hydration and on the support from the internal organic content. The cyclic loading revealed that the average compliance of the silica frustule is 0.019 m/N and increases with increasing number of cycles. The structure–mechanical properties relationship has a direct impact on the vibrational properties of the frustule as a complex micrometer-sized mechanical system. Lessons from Nature’s nanostructuring of diatoms open up pathways to new generations of nano- and microdevices for electronic, electromechanical, photonic, liquid, energy storage, and other applications.

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NIR-responsive gold nanomaterials in photothermal antibacterial therapy: From morphological design to multifunctional platforms

Gong,

Ding,

Shi

et al. 2025

Coordination Chemistry Reviews

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A SERS platform based on diatomite modified by gold nanoparticles using a combination of layer-by-layer assembly and a freezing-induced loading method

Abstract: A novel eco-friendly approach based on a combination of layer-by-layer and freezing-induced loading techniques implemented to modify diatomite using gold nanoparticles ensures surface-enhanced Raman scattering and photoacoustic signal amplification.

Cited by 8 publications

References 85 publications

Design, Fabrication, and Applications of SERS Substrates for Food Safety Detection: Review

Design, Fabrication, and Applications of SERS Substrates for Food Safety Detection: Review

Revealing the static and dynamic nanomechanical properties of diatom frustules—Nature's glass lace

NIR-responsive gold nanomaterials in photothermal antibacterial therapy: From morphological design to multifunctional platforms

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