Zhang Pengcheng, Chen Xi, Yang Hui
Laboratory of Biomedical Microsystems and Nano Devices, Bionic Sensing and Intelligence Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen 518055, China.
CAS Key Laboratory of Health Informatics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
Micromachines (Basel). 2020 Apr 30;11(5):473. doi: 10.3390/mi11050473.
A large-scale homogenized photonic nanojet array with defined pattern and spacing facilitates practical applications in super-resolution imaging, subwavelength-resolution nanopatterning, nano objects trapping and detection technology. In this paper, we present the fabrication of a large-scale photonic nanojet array via the template-assisted self-assembly (TASA) approach. Templates of two-dimensional (2D) large-scale microwell array with defined pattern and spacing are fabricated. Melamine microspheres with excellent size uniformity are utilized to pattern on the template. It is found that microwells can be filled at a yield up to 95%. These arrayed microspheres on the template serve as microlenses and can be excited to generate large-scale photonic nanojets. The uniformly-sized melamine spheres are beneficial for the generation of a homogenized photonic nanojet array. The intensity of the photonic nanojets in water is as high as ~2 fold the background light signal. Our work shows a simple, robust, and fast means for the fabrication of a large-scale homogenized photonic nanojet array.
具有确定图案和间距的大规模均匀化光子纳米射流阵列有助于在超分辨率成像、亚波长分辨率纳米图案化、纳米物体捕获和检测技术等实际应用中发挥作用。在本文中，我们展示了通过模板辅助自组装（TASA）方法制造大规模光子纳米射流阵列的过程。制造了具有确定图案和间距的二维（2D）大规模微孔阵列模板。利用尺寸均匀性极佳的三聚氰胺微球在模板上进行图案化。结果发现微孔的填充率可达95%。模板上这些排列好的微球充当微透镜，并可被激发以产生大规模光子纳米射流。尺寸均匀的三聚氰胺球体有利于生成均匀化的光子纳米射流阵列。水中光子纳米射流的强度高达背景光信号的约2倍。我们的工作展示了一种简单、稳健且快速的方法来制造大规模均匀化光子纳米射流阵列。
