Silver nanoparticles deposited on anodic aluminum oxide template using magnetron sputtering for surface-enhanced Raman scattering substrate

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• 作者：Krongkamol Wong-ek ; Pitak Eiamchai ; Mati Horprathum ; Viyapol Patthanasettakul ; Puenisara Limnonthakul ; Pongpan Chindaudom ; Noppadon Nuntawong
• 关键词：Silver nanoparticles ; Raman scattering ; Surface enhanced raman scattering ; Magnetron sputtering ; Anodic aluminum oxide ; Scanning electron microscopy
• 刊名：Thin Solid Films
• 出版年：2010
• 出版时间：30 September 2010
• 年：2010
• 卷：518
• 期：23
• 页码：7128-7132
• 全文大小：1022 K

文摘

Low-cost and highly sensitive surface-enhanced Raman scattering (SERS) substrates have been fabricated by a simple anodizing process and a magnetron sputtering deposition. The substrates, which consist of silver nanoparticles embedded on anodic aluminum oxide (AAO) templates, are investigated by a scanning electron microscope and a confocal Raman spectroscopy. The SERS activities are demonstrated by Raman scattering from adsorbed solutions of methylene blue and pyridine on the SERS substrate surface. The most optimized SERS substrate contains the silver nanoparticles, with a size distribution of 10–30 nm, deposited on the AAO template. From a calculation, the SERS enhancement factor is as high as 8.5 × 10⁷, which suggests strong potentials for direct applications in the chemical detection and analyses.