【摘要】 建立了一种简单新颖的表面增强拉曼散射(SERS)基底制备方法.首先根据激光光束直径大小制备了与其相匹配的胶体微球阵列模板,再对模板进行等离子体刻蚀,然后采用金蒸汽进行气相沉积,最后将胶体微球剥离其基板,在微球的表面得到"单"金纳米粒子簇.胶体微球为直径2.6μm的聚苯乙烯微球,金纳米粒子直径平均约为300 nm,采用原子力显微镜(AFM)和扫描电子显微镜(SEM)对其进行了表征,并测试了其SERS光谱.测试结果表明,金的拉曼增强因子能够达到10~6.更多还原

【Abstract】 A novel and simple approach that combines both the character of laser beam and the size of the sphere array template was designed and the SERS study was carried out on "single "Au nanodot. The Au nanodots were deposited on the polystyrene sphere with a diameter of 2. 6 μm. The nanodot has a diameter of ca. 300 nm which was characterized by means of atomic force microscope( AFM) and scanning electron microscope( SEM). The Raman enhancement factor for Au is on the order of 10~6.更多还原