Ag on carbon nanowalls mesostructures for SERS

Tsvetkov, M. Yu.; Evlashin, Stanislav A.; Mironovich, K. V.; Минаева, С. А.; Suetin, N. V.; Баграташвили, В. Н.

doi:10.1117/12.2073252

Cited by 4 publications

(4 citation statements)

References 39 publications

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“…CNWs can also be employed in fuel cells since Pt(Cu)st/CNW catalyst has low Pt content and high specific surface [19]. In the chemical and biological area, CNWs improve surface enhanced Raman scattering (SERS), which is a powerful surface analysis tool for chemical and biological single-molecule detection and molecular diagnosis [20,21]. It was reported that ultrasensitive SERS substrates can be fabricated by decorating silver nanoparticles on thin CNWs or coating CNWs with thin silver film [20,21].…”

Section: Introductionmentioning

confidence: 99%

“…In the chemical and biological area, CNWs improve surface enhanced Raman scattering (SERS), which is a powerful surface analysis tool for chemical and biological single-molecule detection and molecular diagnosis [20,21]. It was reported that ultrasensitive SERS substrates can be fabricated by decorating silver nanoparticles on thin CNWs or coating CNWs with thin silver film [20,21]. Seo et al [22] demonstrated that gold-and palladium-decorated honey-VG sheets offer reliable sensing performance for Au tagged antibodies as well as H 2 .…”

Section: Introductionmentioning

confidence: 99%

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Tuning the mechanical properties of vertical graphene sheets through atomic layer deposition

et al. 2016

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We report the fabrication and characterization of graphene nanostructures with mechanical properties that are tuned by conformal deposition of alumina. Vertical graphene (VG) sheets, also called carbon nanowalls (CNWs), were grown on copper foil substrates using a radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD) technique and conformally coated with different thicknesses of alumina (Al2O3) using atomic layer deposition (ALD). Nanoindentation was used to characterize the mechanical properties of pristine and alumina-coated VG sheets. Results show a significant increase in the effective Young's modulus of the VG sheets with increasing thickness of deposited alumina. Deposition of only a 5 nm thick alumina layer on the VG sheets nearly triples the effective Young's modulus of the VG structures. Both energy absorption and strain recovery were lower in VG sheets coated with alumina than in pure VG sheets (for the same peak force). This may be attributed to the increase in bending stiffness of the VG sheets and the creation of connections between the sheets after ALD deposition. These results demonstrate that the mechanical properties of VG sheets can be tuned over a wide range through conformal atomic layer deposition, facilitating the use of VG sheets in applications where specific mechanical properties are needed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tuning the mechanical properties of vertical graphene sheets through atomic layer deposition

et al. 2016

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“…CNW substrates already were also used for SERS measurements by a few groups. In work 15 SERS behavior of Ag nanoparticles and thin films on CNWs was studied. The work 15 studied SERS performance of electrochemically deposited Ag nanoparticles on CNWs.…”

Section: Introductionmentioning

confidence: 99%

“…In work 15 SERS behavior of Ag nanoparticles and thin films on CNWs was studied. The work 15 studied SERS performance of electrochemically deposited Ag nanoparticles on CNWs. In aforementioned works Ag shows excellent SERS activity but due to the chemical instability and tendency to degrade by exposure to air it is hardly suitabe for quantitative SERS studies.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanowalls as a platform for biological SERS studies

Dyakonov

Mironovich

Svyakhovskiy

et al. 2017

Sci Rep

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Herein we report about developing new type of Surface Enhanced Raman Scattering (SERS) substrates based on Au-decorated carbon nanowalls. The designed substrates possess high specific surface area and high sensitivity. Chemical stability of Au perfectly blends with electrical properties and high value of specific surface area of carbon nanowalls. Created structures were applied to detect signals of a typical molecule used for SERS substrates testing, rhodamine 6G, which exhibits electronic absorption in the visible area of spectrum, and biomacromolecules such as tryptophan, guanine, bovine serum albumin and keratin hydrolysates, whose electronic absorption is in the ultraviolet region of spectrum and lies far from the Au plasmonic resonance. The obtained signals for these compounds suggest that the developed substrate is a prominent platform for the detection of biological macromolecules. The properties of the substrate, including its morphology and Au film thickness, as well as the analyte deposition method, were optimized to achieve the optimum Raman signal enhancement. Electric field distribution in the designed structures was calculated to describe the observed dependence of SERS activity on the substrate morphology.

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Carbon-based SERS biosensor: from substrate design to sensing and bioapplication

et al. 2021

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The sensing of bioactive molecules based on photochemical techniques has become one of the fastest-growing scientific fields. Surface-enhanced Raman scattering (SERS) is a highly sensitive technique for the detection of low-concentration molecules, including DNA, microRNA, proteins, blood, and bacteria; single-cell detection and identification; bioimaging; and disease diagnosis, providing abundant structural information for biological analytes. One rapidly developing field of SERS biosensor design is the use of carbon-based nanomaterials as substrate materials, such as zero-dimensional carbon quantum dots, one-dimensional carbon nanotubes, two-dimensional graphene, and graphene oxide (GO) and three-dimensional spatial carbon nanomaterials or carbon-based core-shell nanostructures. In this review, we describe the recent developments in SERS biosensors, in particular carbon-based SERS, for the detection of bioactive molecules. We systematically survey recent developments in carbon nanomaterial-based SERS biosensors, focusing on fundamental principles for carbon-based materials for SERS biosensor design, fabrication, and operation, and provide insights into their rapidly growing future potential in the fields of biomedical and biological engineering, in situ analysis, quantitative analysis, and flexible photoelectric functional materials. As such, this review can play the role of a roadmap to guide researchers toward concepts that can be used in the design of next-generation SERS biosensors while also highlighting current advancements in this field.

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Ag on carbon nanowalls mesostructures for SERS

Cited by 4 publications

References 39 publications

Tuning the mechanical properties of vertical graphene sheets through atomic layer deposition

Tuning the mechanical properties of vertical graphene sheets through atomic layer deposition

Carbon nanowalls as a platform for biological SERS studies

Carbon-based SERS biosensor: from substrate design to sensing and bioapplication

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