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Tag: Copper

Hayabusa-2 bombs asteroid with copper cannonball

Hayabusa-2 bombs asteroid with copper cannonball

Science
April 5 (UPI) -- Last month, Hayabusa-2 shot a bullet at the surface of the asteroid Ryugu. This week, the Japanese spacecraft launched a copper cannonball at the distant asteroid. The probe's Twitter account, managed by scientists at JAXA, Japan's space agency, announced the bombing mission -- officially, the "Small Carry-on Impactor" operation -- a success on Friday morning. "This is the world's first collision experiment with an asteroid!" JAXA tweeted. "In the future, we will examine the crater formed and how the ejector dispersed." Hayabusa-2's camera successfully captured images of the bomb's impact and the resulting ejecta. "Hayabusa2 is operating normally," JAXA announced in an update. "We will be providing further information once we have confirmed whether a crater has been cre...
Copper nanoparticles, green laser light cost beneficial in circuitry printing

Copper nanoparticles, green laser light cost beneficial in circuitry printing

Science
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 ...