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Nanoscale Res Lett. 2012 Jun 6;7(1):292. doi: 10.1186/1556-276X-7-292.

Microfabrication and optical properties of highly ordered silver nanostructures.

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Department of Nano Fusion Technology, Pusan National University, Busan, 609-735, South Korea.


Using thermal evaporation, we fabricated five uniform and regular arrays of Ag nanostructures with different shapes that were based on an anodized aluminum oxide template and analyzed their optical properties. Round-top-shaped structures are obtained readily, whereas to obtain needle-on-round-top-shaped and needle-shaped structures, control of the directionality of evaporation, pore size, length, temperature of the substrate, etc., was required. We then observed optical sensitivity of the nanostructures by using surface-enhanced Raman scattering, and we preliminarily investigated the dependency of Raman signal to the roughness and shape of the nanostructures.

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