Micromachines, Volume 15, Issue 6 (June 2024) – 144 articles
Cover Story (view full-size image):
We delve into the innovative realm of multi-material additive manufacturing (MMAM) for printing conductive traces using molten metal microdroplets on polymer substrates, aimed at enhancing digital signal transmission. By investigating the spread of microdroplets, we establish crucial design rules for adjacent trace printing. Our study examines how print distance impacts trace morphology and resolution, revealing minimal changes in trace pitch with varying distances. We analyze crosstalk interference between adjacent signal traces across different frequencies, confirming through experiments and simulations that no crosstalk occurs below 600 kHz. Additionally, we demonstrate the reliability of printed traces under thermal shock, observing no discontinuities. Our research provides valuable design guidelines for MMAM electronics. View this paper
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