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Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles

Silicon nanowires (SiNWs) prepared by metal-assisted chemical etching of crystalline silicon wafers followed by deposition of plasmonic gold (Au) nanoparticles (NPs) were explored as templates for surface-enhanced Raman scattering (SERS) from probe molecules of Methylene blue and Rhodamine B. The fi...

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Autores principales: Ikramova, Saltanat B., Utegulov, Zhandos N., Dikhanbayev, Kadyrjan K., Gaipov, Abduzhappar E., Nemkayeva, Renata R., Yakunin, Valery G., Savinov, Vladimir P., Timoshenko, Victor Yu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8910339/
https://www.ncbi.nlm.nih.gov/pubmed/35269733
http://dx.doi.org/10.3390/ijms23052590
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author Ikramova, Saltanat B.
Utegulov, Zhandos N.
Dikhanbayev, Kadyrjan K.
Gaipov, Abduzhappar E.
Nemkayeva, Renata R.
Yakunin, Valery G.
Savinov, Vladimir P.
Timoshenko, Victor Yu
author_facet Ikramova, Saltanat B.
Utegulov, Zhandos N.
Dikhanbayev, Kadyrjan K.
Gaipov, Abduzhappar E.
Nemkayeva, Renata R.
Yakunin, Valery G.
Savinov, Vladimir P.
Timoshenko, Victor Yu
author_sort Ikramova, Saltanat B.
collection PubMed
description Silicon nanowires (SiNWs) prepared by metal-assisted chemical etching of crystalline silicon wafers followed by deposition of plasmonic gold (Au) nanoparticles (NPs) were explored as templates for surface-enhanced Raman scattering (SERS) from probe molecules of Methylene blue and Rhodamine B. The filling factor by pores (porosity) of SiNW arrays was found to control the SERS efficiency, and the maximal enhancement was observed for the samples with porosity of 55%, which corresponded to dense arrays of SiNWs. The obtained results are discussed in terms of the electromagnetic enhancement of SERS related to the localized surface plasmon resonances in Au-NPs on SiNW’s surfaces accompanied with light scattering in the SiNW arrays. The observed SERS effect combined with the high stability of Au-NPs, scalability, and relatively simple preparation method are promising for the application of SiNW:Au-NP hybrid nanostructures as templates in molecular sensorics.
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spelling pubmed-89103392022-03-11 Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles Ikramova, Saltanat B. Utegulov, Zhandos N. Dikhanbayev, Kadyrjan K. Gaipov, Abduzhappar E. Nemkayeva, Renata R. Yakunin, Valery G. Savinov, Vladimir P. Timoshenko, Victor Yu Int J Mol Sci Article Silicon nanowires (SiNWs) prepared by metal-assisted chemical etching of crystalline silicon wafers followed by deposition of plasmonic gold (Au) nanoparticles (NPs) were explored as templates for surface-enhanced Raman scattering (SERS) from probe molecules of Methylene blue and Rhodamine B. The filling factor by pores (porosity) of SiNW arrays was found to control the SERS efficiency, and the maximal enhancement was observed for the samples with porosity of 55%, which corresponded to dense arrays of SiNWs. The obtained results are discussed in terms of the electromagnetic enhancement of SERS related to the localized surface plasmon resonances in Au-NPs on SiNW’s surfaces accompanied with light scattering in the SiNW arrays. The observed SERS effect combined with the high stability of Au-NPs, scalability, and relatively simple preparation method are promising for the application of SiNW:Au-NP hybrid nanostructures as templates in molecular sensorics. MDPI 2022-02-26 /pmc/articles/PMC8910339/ /pubmed/35269733 http://dx.doi.org/10.3390/ijms23052590 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ikramova, Saltanat B.
Utegulov, Zhandos N.
Dikhanbayev, Kadyrjan K.
Gaipov, Abduzhappar E.
Nemkayeva, Renata R.
Yakunin, Valery G.
Savinov, Vladimir P.
Timoshenko, Victor Yu
Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles
title Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles
title_full Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles
title_fullStr Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles
title_full_unstemmed Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles
title_short Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles
title_sort surface-enhanced raman scattering from dye molecules in silicon nanowire structures decorated by gold nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8910339/
https://www.ncbi.nlm.nih.gov/pubmed/35269733
http://dx.doi.org/10.3390/ijms23052590
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