Department of Nano Fusion Technology, Pusan National University, Busan, 609-735, South Korea.
Nanoscale Res Lett. 2012 Jun 6;7(1):292. doi: 10.1186/1556-276X-7-292.
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.
采用热蒸发法，我们以氧化铝模板为基础，制作了五个具有不同形状的均匀规则的 Ag 纳米结构阵列，并分析了它们的光学性质。很容易得到圆顶形状的结构，而要得到针状在圆顶形状和针状结构，需要控制蒸发的方向性、孔径、长度、衬底温度等。然后，我们通过表面增强拉曼散射观察了纳米结构的光学灵敏度，并初步研究了拉曼信号对纳米结构粗糙度和形状的依赖性。
