【摘要】 通过聚苯乙烯纳米球为模板制备了规则排列的镍纳米球腔阵列。研究结果表明吸附于镍纳米球腔内的对巯基苯胺的拉曼散射可被极大增强。拉曼散射的表面增强被归因于纳米球腔阵列的协同表面等离子体共振与光的耦合导致的电磁场增强以及纳米球腔结构对电磁场的聚焦效应而使球腔内电磁场能量密度的增大。更多还原

【Abstract】 Highly ordered array of nickel inversed spherical cavity was prepared using polystylene nanoparticles as a template.It was demonstrated that the Raman scattering of 4-aminothiophenol adsorbed on the array can be greatly enhanced. The surface enhancement of Raman scattering is ascribed to the enhancements of the electric field in the cavity by the coupling of the surface plasmon resonance and light and electromagnetic energy density due to the focusing effect of the cavity structure.更多还原