Diffusion of solvent in PDMS elastomer for micromolding in capillaries

被引:25
作者
Duineveld, PC
Lilja, M
Johansson, T
Inganäs, O
机构
[1] Philips Res, NL-5656 AA Eindhoven, Netherlands
[2] Linkoping Univ, Dept Phys, IFM, SE-58183 Linkoping, Sweden
关键词
D O I
10.1021/la025831s
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Micromolding in capillaries is a soft lithography method for patterning materials, We have studied the diffusion of solvent from the excavated microsized channels in the stamp into the PDMS material, both theoretically and experimentally. It was demonstrated that a model of I-D diffusion of solvent through a PDMS stamp, coupled with a mass conservation of the solvent in the channels, leads to a quantitatively accurate model for the velocity of the boundary between liquid-filled and vapor-filled microchannels in the stamp. With the model the diffusion coefficient of the solvent into PDMS was successfully determined.
引用
收藏
页码:9554 / 9559
页数:6
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