Surface-enhanced Raman scattering substrate of silver nanoparticles depositing on AAO template fabricated by magnetron sputtering |
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| Affiliation: | 1. Photonics Technology Laboratory, National Electronics and Computer Technology, 112 Thailand Science Park, Patumthani, Thailand;2. Nanoscience and Technology Program, Chulalongkorn University, Bangkok, Thailand;1. Department of Theoretical and Experimental Physics, Center of Technology, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;2. Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, 45117 Essen, Germany;3. Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, 70569 Stuttgart, Germany;1. Centre of Technology, Department of Experimental Physics, Lenin Avenue 43, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;2. Material Properties Measurements Centre, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;3. Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), Universitaetsstr, 5-7, University of Duisburg-Essen, 45117 Essen, Germany;1. Chemical Engineering & Pilot Plant Department, National Research Centre, Dokki, Giza, Egypt;2. Physical Chemistry Department, National Research Centre, Dokki, Giza, Egypt;3. Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt |
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| Abstract: | In this report, we describe a fabrication process of low-cost and highly sensitive SERS substrates by using a simple anodizing setup and a low-energy magnetron sputtering method. The structure of the SERS substrates consists of silver nanoparticles deposited on a layer of anodic aluminum oxide (AAO) template. The fabricated SERS substrates are investigated by a scanning electron microscope (SEM), a transmission electron microscope (TEM), and a confocal Raman spectroscope. We have verified from the surface morphology that the fabricated SERS substrates consist of high-density round-shape silver nanoparticles where their size distribution ranges from 10 to 30 nm on the top and the bottom of nanopores. The surface-enhanced Raman scattering activities of these nanostructures are demonstrated using methylene blue (MB) as probing molecules. The detection limit of 10?8 M can be achieved from this SERS substrate. |
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