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1. 南京理工大学 机械工程学院,江苏 南京,中国,210094
2. 南京航空航天大学仿生结构与材料防护研究所,江苏 南京,210016
收稿日期:2015-04-15,
修回日期:2015-05-10,
纸质出版日期:2015-11-14
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朱晓阳, 朱丽, 杨利军等. 液滴微喷射与液体模塑法制备柔性微凹透镜阵列[J]. 光学精密工程, 2015,23(10z): 367-373
ZHU Xiao-yang, ZHU Li, Yang Li-jun etc. Preparation of flexible concave microlens array based on micro-jetting and liquid molding method[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 367-373
朱晓阳, 朱丽, 杨利军等. 液滴微喷射与液体模塑法制备柔性微凹透镜阵列[J]. 光学精密工程, 2015,23(10z): 367-373 DOI: 10.3788/OPE.20152313.0367.
ZHU Xiao-yang, ZHU Li, Yang Li-jun etc. Preparation of flexible concave microlens array based on micro-jetting and liquid molding method[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 367-373 DOI: 10.3788/OPE.20152313.0367.
采用液滴微喷射技术与液体模塑法实验研究了微凹透镜阵列的制备。采用微液滴阵列制备实验系统
以甘油水溶液为喷射材料
将其按需喷射到镀有TiO
2
纳米粒子的亲水化薄膜玻璃基片上
在界面张力和亲水化效应的作用下
形成Wenzel润湿状态下的平凸状微液滴;然后用液体模塑法将微液滴阵列复制到柔性聚二甲基硅氧烷(PDMS)材料上。实验显示:制得的微液滴阵列具有较好的一致性及整齐度
复制得到的微凹透镜阵列在光学显微镜及扫描电子显微镜下均具有较好的几何特性。研究并分析了浇铸PDMS液体对在Young亲水状态及Wenzel亲水状态下的微液滴阵列的形状及位置的影响
结果显示在Wenzel亲水状态下的微液滴保持了良好的形状及位置。对制得的微凹透镜阵列进行了简单的成像实验
获得了良好的成像效果。从实验过程和结果可以看出
采用液滴微喷射技术及液体模塑法制备微凹透镜阵列具有过程简单、成本低廉、对制备环境要求低等优点;制备的微凹透镜阵列几何与光学性能优良。
The the flexible concave microlen array was fabricated based on the micro-droplet jetting and liquid molding methods. By using jetting fabrication system of micro-droplet array
the glycerin solution was jetted on the glass substrate coated with the hydrophilic film treated by TiO
2
nanoparticles
and a micro-liquid array under the Wenzel state was formed on the glass substrate due to surface tension and hydrophilic effect. Then
the flexible concave was obtained by a liquid molding process using the polydimethylsiloxane(PDMS). The result shows that the micro-droplets are highly homogeneous and are well aligned. The final fabricated concave microlen arrays still have good geometric characteristic. The influences of the PDMS mixed liquid casting process on the Wenzel state micro-droplet and Young state micro-drolet were studied and the result shows that the micro-droplet under the Wenzel state keeps an original shape after the mixed PDMS liquid was casted on them. Through the projection image experiment of the concave microlens array
the clear
erected
shrunken and virtual image of the concave micro-lens array was obtained. The experimental process and result indicate that the jetting fabrication of the concave micro-lens array using the micro-droplet jetting technology and liquid molding method has many advantages
such as the simple fabrication process
low cost
low environmental requirements and the final fabricated PDMS concave micro-lens has good geometry and optical performance.
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