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Effect of Micro Surface Structure on Printed Electronics  

Kim, Seung-Hwan (Department of Mechanical Engineering, KAIST)
Kang, Hyun-Wook (Department of Mechanical Engineering, KAIST)
Lee, Kyung-Heon (Department of Mechanical Engineering, KAIST)
Sung, Hyung-Jin (Department of Mechanical Engineering, KAIST)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.9, 2010 , pp. 20-25 More about this Journal
Abstract
The effect of micro surface structure on printing for printed electronics has been studied experimentally. The photolithography MEMS fabricationwass used to make a SU-8 molder which has micro structures on the surface, and the PDMS micro structure was fabricated by the PDMS molding method. In the aspect of printed electronics, we used silver paste conductive ink. We measured the surface energy variation on pillar microstructure. The microstructure was used to real printing experiment by a screen printing. We printed 1cm micro lines which have $30{\sim}250{\mu}m$ width, and checked the conductivity to sort out opened line pattern. Printability was defined by success probability of printed patterns and we found that the present microstructures improve the printability significantly.
Keywords
Printed Electronics; Micro Structure; Screen Print;
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