Ni Haibin, Ge Lu, Liu Xiang, Zhou Ying, Chang Jianhua, Ali Hassan, Pan Chao, Wang Tingting, Wang Ming
Jiangsu Key Laboratory of Meteorological Observation and Information Processing, School of Electronics and Information Engineering, Nanjing University of Information Science and Technology Nanjing 210044 China
State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University Nanjing 210096 China.
RSC Adv. 2018 Nov 27;8(69):39735-39741. doi: 10.1039/c8ra07564f. eCollection 2018 Nov 23.
A route to produce highly ordered two-dimensional periodic composite microsphere/gel arrays by using a sol-gel coassembly method was proposed and demonstrated. The proposed semi-infiltrated ordered monolayer PS microsphere/gel array affords a flexible platform to produce versatile plasmonic structures through either adjusting the gel infiltration height or sputtered metal film thickness. Fabrication factors, such as environmental humidity, evaporation temperature, and tetraethyl orthosilicate solution concentration, that will affect the quality of the monolayer film were experimentally investigated. Pair correlation function was applied to evaluate the order degree of the experimental results, which reveals the high uniformity of the composite microsphere arrays (CSAs). By adjusting metal film thickness, the figures of merit of propagating surface plasmons excited on CSAs or concave arrays can be tuned under normal incidence.
提出并展示了一种通过溶胶 - 凝胶共组装方法制备高度有序的二维周期性复合微球/凝胶阵列的途径。所提出的半浸润有序单层聚苯乙烯（PS）微球/凝胶阵列提供了一个灵活的平台，可通过调整凝胶浸润高度或溅射金属膜厚度来制备多功能等离子体结构。通过实验研究了诸如环境湿度、蒸发温度和正硅酸乙酯溶液浓度等影响单层膜质量的制备因素。应用对关联函数来评估实验结果的有序度，这揭示了复合微球阵列（CSA）的高度均匀性。通过调整金属膜厚度，在垂直入射条件下，可以调节在CSA或凹面阵列上激发的传播表面等离子体的品质因数。
