Direct Conductive Patterning on 3D Printed Structure Using Laser

摘要

Recently, several investigations have been reported on hybrid technology thatrnembeds circuits on 3D printed models during processing. A new directrnfabrication method of conductive patterns on 3D printed structure with laserrnis suggested for process simplicity. In order to fabricate conductive patterns,rna conventional 1064nm fiber laser is utilized to selectively remove thernpolymer and connect the copper particles to each other. The fabricatedrnpatterns achieve high conductivity with a resistance of 0.15Ωcm~(-1) when thernlength of the pattern is 50 mm. In this study, the surface property changes ofrnthe 3D printed structure through laser irradiation are presented and therninfluences of the laser parameters, including average power, scanning modern(repetition rate), scanning speed, and scan line spacing, on the processrnefficiency are investigated. Finally, a prototype of an electronic circuit is madernand demonstrated for powering up LEDs. The proposed method allows torneasily and rapidly fabricate high conductive patterns on complex 3Drnstructures by combining the additive manufacturing technology with laserrnirradiation.