Fabrication of multi-scale micro-lens arrays on hydrophobic surfaces using a drop-on-demand droplet generator

Fabrication of multi-scale micro-lens arrays on hydrophobic surfaces using a drop-on-demand droplet generator
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使用按需滴滴发生器在疏水表面制造多尺度微透镜阵列

DOI:
10.1016/j.optlastec.2014.09.002
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发表时间:
2015-03
影响因子:
5
通讯作者:
Weiyi Zhang
Weiyi Zhang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Li Zhu;Hejuan Chen;Mei Yang;Weiyi Zhang

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介绍了一种利用按需滴加(DOD)液滴发生器制备多尺度聚合物微透镜和微透镜阵列的简单方法。用紫外光(UV)固化聚合物作为油墨,在不同润湿条件的疏水表面上进行DOD印刷,并在紫外灯下固化。制作了具有良好几何均匀性的高质量微透镜和多层微透镜。微透镜和微透镜的形状由不同的表面润湿条件控制,这些形状的变化影响微透镜和微透镜的光学性质,如数值孔径(NA)、焦距(F)和f数(f#)。用白光干涉仪(VSI模式)和原子力显微镜(AFM)测量了微透镜的表面粗糙度,结果令人满意。利用光学显微镜研究了表面润湿条件对MLA的成像和聚光特性的影响。
A simple method was demonstrated for the fabrication of multi-scale polymer microlenses (µ-lenses) and microlens arrays (MLAs) using a drop-on-demand (DOD) droplet generator. A ultraviolet (UV) curable polymer used as the ink was DOD printed on the hydrophobic surfaces with different wetting conditions and cured by a UV lamp. The high quality µ-lenses and MLAs with good geometrical uniformity were fabricated. The shapes of the µ-lenses and MLAs were controlled by the different surface wetting conditions, and these shape changes affected the optical properties of the µ-lenses and MLAs, such as the numerical aperture (NA), focal distance (f) and thef-number (f#). The surface roughness of the µ-lens was measured by a white light interferometer (VSI mode) and atomic force microscope (AFM) and proved satisfactory. The influences of the surface wetting conditions on imaging and light gathering characteristics of the MLAs were evaluated by an optical microscope.
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