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以内嵌在聚合物内、呈周期性非紧密接触方式排布的SiO2微球阵列-聚合物复合薄膜为模板,采用HF选择性地蚀除复合薄膜表层SiO2微球后,便可便捷地得到单片面积达182 cm2、呈等边六边形周期性排布的有机球凹阵列,每个微球凹的容积约为4.72阿升(Attoliter,1 Attoliter=10-18L),球凹排布密度约为4.9×108球凹/cm2;镀金后的球凹阵列可用作SERS活性基底,以苯硫酚为探针的SERS结果表明,球凹阵列的Raman信号增强因子(EF)高达108～109量级,在182 cm2范围内EF的RSD值在5.5%～8.6%范围内.
Taking the SiO2 microsphere array-polymer composite film embedded in the polymer periodically arranged in non-close contact mode as the template, HF alone can selectively remove the SiO2 microspheres on the surface of the composite film to obtain single An area of 182 cm2, was equisignal hexagonal periodically arranged organic ball concave array, each microspherical concave volume of about 4.72 A liter (Attoliter, 1 Attoliter = 10-18L), concave arrangement density About 4.9 × 108 balls concave / cm2; gold-plated ball-concave array can be used as SERS active substrate, STH probe with thiophenol as a probe shows that the spherical concave array Raman signal enhancement factor (EF) up to 108 ~ 109 In the range of 182 cm2, the RSD of EF ranged from 5.5% to 8.6%.