微热模塑法制备聚苯乙烯球面微透镜阵列  

Spherical Micro-lens Array of Polystyrene Made by Micro-molding Method

作　　者：石锦霞[1] 何平笙[1] 

机构地区：[1]中国科学技术大学高分子科学与工程系,合肥230026

出　　处：《高等学校化学学报》2007年第5期978-981,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20374049);高等学校博士学科点专项科研基金(批准号:20040358018)资助.

摘　　要：用软刻蚀中的微热模塑技术制备聚苯乙烯(PS)微立方体阵列,再利用材料在液态或熔融状态时其表面自由能会不断地减小直至最低从而达到最稳定的状态这一特性,通过加热熔融方法成功地将PS微立方体结构变成了PS微半球体结构,光学成像测试验证了PS微半球体阵列具有良好的光学成像功能,可以作为微透镜阵列使用.用微热模塑技术制备高聚物的微透镜阵列,其过程简单,成本低,适用于很多材料,所制备的微透镜阵列结构精确度高,并因所用到的模具为弹性印章,有望在非平面上制备微透镜阵列,为微透镜阵列的制备提供了一种新的途径.Polystyrene （PS） micro-cubic poles array was fabricated with the micro-molding of the soft lithography. Based on that the principle of liquid or melting matter will be the most stable state by means of reducing its surface energy to minimum, the PS micro-cubic poles array shrunk into the micro-hemispheroid array thrbugh the heating to the temperature over PS softening point. The optical imaging testing indicates that the PS micro-hemispheroid array had a good optical behavior of being able to image the ＂H＂ or ＂Y＂ type objects and could be used as micro-lens array. The microfabrication technology to fabricate polymer micro-lens array is easy and low-cost with a high precision and can be suitable for other transparent plastics. In addition, due to flexibility of PDMS stamp the micro-lens array would be possible to fabricate on a curved surface.

关 键 词：聚苯乙烯 微透镜阵列 微热模塑 软刻蚀 

分 类 号：O631[理学—高分子化学]