ArticleSensors (Basel, Switzerland)2020
Raman Signal Enhancement Tunable by Gold-Covered Porous Silicon Films with Different Morphology.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Simultaneous Electrochemical Formation of Porous Silicon and Noble NPs for Au Nucleation Sites in SERS Substrates.ACS materials Au · 2026Article
- Sensitive ratiometric detection of Fumonisin BFood chemistry: X · 2025Article
- Application of serum SERS technology combined with deep learning algorithm in the rapid diagnosis of immune diseases and chronic kidney disease.Scientific reports · 2023Article
- FDTD Simulations of Shell Scattering in Au@SiONanomaterials (Basel, Switzerland) · 2022Article
- Demonstration of SWIR Silicon-Based Photodetection by Using Thin ITO/Au/Au Nanoparticles/n-Si Structure.Sensors (Basel, Switzerland) · 2022Article
- Complementary Powerful Techniques for Investigating the Interactions of Proteins with Porous TiOMembranes · 2022Review
- Antiviral adsorption activity of porous silicon nanoparticles against different pathogenic human viruses.Bioactive materials · 2022Article
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Authors and funding
8 authors.
Funding
Abstract
The ease of fabrication, large surface area, tunable pore size and morphology as well surface modification capabilities of a porous silicon (PSi) layer make it widely used for sensoric applications. The pore size of a PSi layer can be an important parameter when used as a matrix for creating surface-enhanced Raman scattering (SERS) surfaces. Here, we evaluated the SERS activity of PSi with pores ranging in size from meso to macro, the surface of which was coated with gold nanoparticles (Au NPs). We found that different pore diameters in the PSi layers provide different morphology of the gold coating, from an almost monolayer to 50 nm distance between nanoparticles. Methylene blue (MB) and 4-mercaptopyridine (4-MPy) were used to describe the SERS activity of obtained Au/PSi surfaces. The best Raman signal enhancement was shown when the internal diameter of torus-shaped Au NPs is around 35 nm. To understand the role of plasmonic resonances in the observed SERS spectrum, we performed electromagnetic simulations of Raman scattering intensity as a function of the internal diameter. The results of these simulations are consistent with the obtained experimental data.
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