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Preparation of Tetrapod-Like Nanostructure Array and Used as the Surface-Enhanced Raman Scattering Substrates

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Nanostructure surface composed of tetrapod-like structure with the period of about 2 μm has been made by simple nanoprinted method, the collodion was poured directly on the surface of the template and tore off after it became solidification, and then a layer of gold was sputtered on the collodion surface. The electric field distributions of the tetrapod-like structure with different size and period have been simulated using finite element method. Surface-enhanced Raman spectra mapping image gotten from the substrates illustrated the uniform enhancement property of it. The diluted aqueous solution of Rhodamine 6G (50 nM) was used to test the enhanced property of substrates for trace detection and good quality spectra has been gotten. The spectra of melamine with the concentration of 1 mg/L (7.9 μM) on the substrates were gotten to show the enhanced ability for molecule with small Raman scattering cross section.
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Keywords: DETECTION LIMIT; ELECTRIC FIELD DISTRIBUTION; MELAMINE; SURFACE-ENHANCED RAMAN SCATTERING; TETRAPOD-LIKE NANOSTRUCTURE

Document Type: Research Article

Publication date: 2011-10-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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