Adsorption of gold nanoparticles on silicon substrate and their application in Surface Enhancement Raman Scattering
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedad Mexicana de Física A.C.
2011
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| _version_ | 1876469391340601344 |
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| author | F. Castillo |
| author_facet | F. Castillo |
| contents | Adsorption of gold nanoparticles on silicon substrate and their application in Surface Enhancement Raman Scattering F. Castillo E. Pérez E. de la Rosa Física, Astronomía y Matemáticas SERS Keywords plasmons gold nanoparticles Gold nanoparticles were synthesized by using sodium citrate and they were deposited on silicon wafer by immersion and by solvent evapora- tion methods. Silicon wafers was functionalized for the first method and a template of colloidal silica was used in the second one. Scanning electron microscopy shows a homogeneous distribution of nanoparticles on the surface for the immersion method and a self-assembly of gold nanoparticles forming clusters with different sizes in the solvent evaporation one. Rhodamine 6G at concentrations as lower as 10 ° 7 M was used to characterize the Surface Enhanced Raman scattering on surfaces prepared by both methods. The largest enhancement of Raman signal was observed for those substrates prepared by solvent evaporation where clusters were formed. Such enhancement is attributed to the intense electromagnetic field produced by plasmon resonance of gold nanoparticles deposited on a surface. 2011 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57030389014 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.57 |
| format | Artículo científico |
| id | redalyc_57030389014 |
| institution | Redalyc |
| language | en |
| publishDate | 2011 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Adsorption of gold nanoparticles on silicon substrate and their application in Surface Enhancement Raman Scattering F. Castillo Física, Astronomía y Matemáticas SERS Keywords plasmons gold nanoparticles Adsorption of gold nanoparticles on silicon substrate and their application in Surface Enhancement Raman Scattering F. Castillo E. Pérez E. de la Rosa Física, Astronomía y Matemáticas SERS Keywords plasmons gold nanoparticles Gold nanoparticles were synthesized by using sodium citrate and they were deposited on silicon wafer by immersion and by solvent evapora- tion methods. Silicon wafers was functionalized for the first method and a template of colloidal silica was used in the second one. Scanning electron microscopy shows a homogeneous distribution of nanoparticles on the surface for the immersion method and a self-assembly of gold nanoparticles forming clusters with different sizes in the solvent evaporation one. Rhodamine 6G at concentrations as lower as 10 ° 7 M was used to characterize the Surface Enhanced Raman scattering on surfaces prepared by both methods. The largest enhancement of Raman signal was observed for those substrates prepared by solvent evaporation where clusters were formed. Such enhancement is attributed to the intense electromagnetic field produced by plasmon resonance of gold nanoparticles deposited on a surface. 2011 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57030389014 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.57 |
| title | Adsorption of gold nanoparticles on silicon substrate and their application in Surface Enhancement Raman Scattering |
| topic | Física, Astronomía y Matemáticas SERS Keywords plasmons gold nanoparticles |
| url | https://www.redalyc.org/articulo.oa?id=57030389014 |