Shen Huijuan, Wang Yaode, Cao Liang, Xie Ying, Wang Lu, Chu Xueying, Shi Kaixi, Wang Shenzhi, Yu Miaomiao, Liu Ri, Zhang Jingran, Li Changli, Weng Zhankun, Wang Zuobin
School of Science, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.
International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.
Nanotechnology. 2021 Dec 23;33(11). doi: 10.1088/1361-6528/ac3e34.
The micro-stripe structure was prepared by laser interference induced forward transfer technique, composed of Ag nano-particles (NPs). The effects of the film thickness with the carbon nano-particles mixed polyimide (CNPs@PI), Ag film thickness, and laser fluence were studied on the transferred micro-stripe structure. The periodic Ag micro-stripe with good resolution was obtained in a wide range of CNPs@PI film thickness from ∼0.5 to ∼1.0m for the Ag thin film ∼20 nm. The distribution of the Ag NPs composing the micro-stripe was compact. Nevertheless, the average size of the transferred Ag NPs was increased from ∼41 to ∼197 nm with the change of the Ag donor film from ∼10 to ∼40 nm. With the increase of the laser fluence from 102 to 306 mJ·cmper-beam, the transferred Ag NPs became aggregative, improving the resolution of the corresponding micro-stripe. Finally, the transferred Ag micro-stripe exhibited the significant surface enhanced Raman scattering (SERS) property for rhodamine B (RhB). While the concentration of the RhB reached 10mol·L, the Raman characteristic peaks of the RhB were still observed clearly at 622, 1359 and 1649 cm. These results indicate that the transferred Ag micro-stripe has potential application as a SERS chip in drug and food detection.
微条纹结构是通过激光干涉诱导正向转移技术制备的，由银纳米颗粒（NPs）组成。研究了碳纳米颗粒混合聚酰亚胺（CNPs@PI）薄膜厚度、银膜厚度和激光能量密度对转移微条纹结构的影响。对于约20nm的银薄膜，在约0.5至约1.0μm的宽范围CNPs@PI薄膜厚度内获得了具有良好分辨率的周期性银微条纹。构成微条纹的银纳米颗粒分布紧凑。然而，随着银供体膜从约10nm变为约40nm，转移的银纳米颗粒的平均尺寸从约41nm增加到约197nm。随着激光能量密度从102增加到306mJ·cm²/束，转移的银纳米颗粒变得聚集，提高了相应微条纹的分辨率。最后，转移的银微条纹对罗丹明B（RhB）表现出显著的表面增强拉曼散射（SERS）特性。当RhB的浓度达到10⁻⁸mol·L时，仍能在622、1359和1649cm⁻¹处清晰观察到RhB的拉曼特征峰。这些结果表明，转移的银微条纹作为SERS芯片在药物和食品检测中具有潜在应用。
