Journal
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
Volume 215, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.201700597
Keywords
3D printing; conductive patterns; laser-induced polymers; laser irradiation; metal particles
Funding
- Industrial Fundamental Technology Development Program - Ministry of Trade, Industry and Energy (MOTIE) of Korea [10051680]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10051680] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Recently, several investigations have been reported on hybrid technology that embeds circuits on 3D printed models during processing. A new direct fabrication method of conductive patterns on 3D printed structure with laser is suggested for process simplicity. In order to fabricate conductive patterns, a conventional 1064 nm fiber laser is utilized to selectively remove the polymer and connect the copper particles to each other. The fabricated patterns achieve high conductivity with a resistance of 0.15 Omega cm(-1) when the length of the pattern is 50 mm. In this study, the surface property changes of the 3D printed structure through laser irradiation are presented and the influences of the laser parameters, including average power, scanning mode (repetition rate), scanning speed, and scan line spacing, on the process efficiency are investigated. Finally, a prototype of an electronic circuit is made and demonstrated for powering up LEDs. The proposed method allows to easily and rapidly fabricate high conductive patterns on complex 3D structures by combining the additive manufacturing technology with laser irradiation.
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