Abstract
In this study, a novel laser direct synthesis and pattering technology is applied in conjunction with an A&F XXY alignment platform to rapidly fabricate flexible conductors on a polymer substrate (polyimide film) with designated patterns. In the process, a focused continuous wave green laser was focused onto the polymer substrate that is mounted and directed using the XXY alignment platform. The focused laser energy absorbed by the polymer substrate is used to heat the transparent and particle-free reactive silver ink on the polymer substrate surface. With appropriate programing of the XXY alignment platform motion to control the laser scanning parameters, silver patterns with good electrical conductivity were successfully obtained. This technology can be operated directly at atmospheric pressure and room temperature. It does not require the use of vacuum chamber, oven and photo-mask, etc. Therefore, this novel technology and system offers a new approach to the cost-effective and green fabrication for flexible electronics. The compact size and excellent stability of the XXY alignment platform make the fabrication system even more competitive. In particular, the programmable small radius plane rotation function of the XXY alignment platform provides flexibility in the pattern design with turnings while keeps the uniformity of the resulted micro metal lines.
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