Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia.
Lab Chip. 2011 Feb 7;11(3):541-4. doi: 10.1039/c0lc00339e. Epub 2010 Oct 28.
A rapid, high-precision method for localised plasma-treatment of bonded PDMS microchannels is demonstrated. Patterned electrodes were prepared by injection of molten gallium into preformed microchannel guides. The electrode guides were prepared without any additional fabrication steps compared to conventional microchannel fabrication. Alignment of the "injected" electrodes is precisely controlled by the photomask design, rather than positioning accuracy of alignment tools. Surface modification is detected using a fluorescent dye (Rhodamine B), revealing a well-defined micropattern with regions less than 100 µm along the length of the microchannel.
本文展示了一种快速、高精度的局部等离子体处理键合 PDMS 微通道的方法。通过将熔融镓注入预先成型的微通道导槽中，制备了图案化电极。与传统的微通道制造相比，电极导槽的制备不需要任何额外的制造步骤。通过掩模设计精确控制“注入”电极的对准，而不是对准工具的定位精度。使用荧光染料（罗丹明 B）检测表面改性，显示出具有小于 100 µm 长度的微通道的定义明确的微图案。
