Ordering of silver flowerlike nanosheet structures on an aluminium substrate

Tsutsumanova, Gichka G.; Lyutov, L.; Tzonev, Atanas N.; Russev, Stoyan C.

doi:10.1016/j.matlet.2008.03.059

Cited by 3 publications

(5 citation statements)

References 19 publications

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“…The work opens prospects for further research, like optimization of the preparation conditions for obtaining predefined morphology of the nanosheet arrays within silver flowers, testing the substrates against different analytes, and investigation of the possibility for multiple usage/washability of the substrates. Electronic beam lithography allows for selective "seeding" of silver flowers in predefined positions, including in ordered patterns [38], which infers for promising on-chip applications of this type or SERS substrates in biosensing and in medical analysis.…”

Section: Discussionmentioning

confidence: 99%

“…Our intent was to combine the large surface-to-volume ratio of the NFs with the evenly distributed SERS response characteristic of the artificial periodic nanostructures. Objects of investigation were the earlier reported silver flowers ("roses") deposited on aluminum surface [38], due to the simple chemical route of preparation and the possibility of ordering in 2D arrays. In particular, we were interested on the influence of the nanoscale morphology of the silver roses on their SERS enhancement.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

Ivanov¹,

Tsutsumanova²,

Todorov³

et al. 2021

Preprint

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Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They are being extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification and so on. Flowerlike objects, due to their highly irregular surface, may act also as plasmonic materials, providing resonant coupling between optical waves and surface plasmon excitations. This fact infers for the possibility to use micro- and nanoflowers as effective surface-enhanced Raman scattering (SERS) substrate materials. Here, we report on the design and Raman enhancement properties of silver flowerlike structures, deposited on aluminum surface. A simple and cost-effective fabrication method is described, which leads to SERS substrates of high developed surface area. The morphology of the silver flowers on a nanoscale is characterized by self-organized quasiperiodic stacks of nanosheets, which act as plasmonic cavity-resonators. The substrates were tested against rhodamine-6G (R6G) water solutions of concentration varying between 10–3 M and 10–7 M. Optimal SERS enhancement factors of up to 105 were established at R6G concentrations in the range 10–6 – 10–7 M.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

Ivanov¹,

Tsutsumanova²,

Todorov³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…In particular, it would be of interest to elaborate fabrication conditions for silver flowers with smaller-period nanosheet arrays, which provide higher concentration of linear hot spots. The good reproducibility of the SERS signal in combination with elaborated technology of "seeding" of silver flowers in predefined positions-including in ordered patterns [41]-infers for promising applications of this type or SERS substrates in biosensing and in medical analysis.…”

Section: Discussionmentioning

confidence: 99%

“…A controllable growth of the same type of structures is also possible on a clean aluminum surface pre-sealed with a thin PMMA film. The growth centers are created by selective etching of PMMA layer by means of electron-beam lithography, as described in [41]. Figure 1c,d, represent the diameter distribution of the silver flowers for both types of substrates.…”

Section: Preparation and Characterization Of The Sers Substratesmentioning

confidence: 99%

“…Our intent was to combine the large surface-to-volume ratio of the NFs with the evenly distributed SERS response characteristic of the artificial periodic nanostructures. Objects of investigation were the earlier reported silver flowers ('roses') deposited on aluminum surface [41], due to the simple chemical route of preparation and the possibility of ordering in 2D arrays. In particular, we were interested on the influence of the nanoscale morphology of the silver roses on their SERS enhancement.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

et al. 2021

View full text Add to dashboard Cite

Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They have been extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification, and so on. Flowerlike objects, due to their highly irregular surface, may act also as plasmonic materials, providing resonant coupling between optical waves and surface plasmon excitations. This fact allows us to infer the possibility to use micro- and nanoflowers as effective surface-enhanced Raman scattering (SERS) substrate materials. Here, we report on the design and Raman enhancement properties of silver flowerlike structures, deposited on aluminum surface. A simple and cost-effective fabrication method is described, which leads to SERS substrates of high developed surface area. The morphology of the silver flowers on a nanoscale is characterized by self-organized quasiperiodic stacks of nanosheets, which act as plasmonic cavity resonators. The substrates were tested against rhodamine-6G (R6G) water solutions of concentration varying between 10−3 M and 10−7 M. Optimal SERS enhancement factors of up to 105 were established at R6G concentrations in the 10−6–10−7 M range.

show abstract