Copper nanoparticles, green laser light cost beneficial in circuitry printing
Sept. 13 (UPI) -- Printing electronic circuitry with copper nanoparticle ink and green laser light can be more cost beneficial and efficient, according to a study. Researchers at Soonchunhyang University in South Korea studied the thin-film printing technique instead of the conventional methods, based on laser power, scanning speed, pre-baking conditions and film thickness effects. Their findings were published this week in the journal AIP Advances. Nanoparticles in metallic inks have an advantage over bulk metals because of their lower melting points in the circuitry manufacturing. Originally the researchers, led by Kye-Si Kwon, tested silver nanoparticle ink but found it is costlier. Then, they studied studied copper, which is derived from copper oxide. Although copper's melting point ...