The easiest way to picture how Hu's system works is to think of an inkjet printer, but replace the ink cartridge with one that dispenses liquid metal.
Hu's team tested more than thirty different types of paper before realizing that standard inkjet paper worked as well as anything, and was cheaper than most to secure.
The metal they use, on the other hand, is anything but ordinary.
"We use silver to make the nanowire," said Hu. "It's still much cheaper than making electric circuits the 'normal' way, and it holds up far better than copper, which has a tendency to oxidize too quickly."
Hu's team was able to fold the paper-thin circuit 5,000 times with a high level of functionality still intact, answering questions about the durability of the finished product.
While medical uses could have the most day-to-day impact for such circuits, their flexibility and ease of use means anything electronic could benefit.
"The global applications for this will drive development in a long-term way," said Hu. "For now we will focus on improving the mechanics of this new type of additive manufacturing, working on multiple-nozzle printing, things of that nature."
The research has already gotten plenty of attention, with the American Chemical Society journal Applied Materials & Interfaces publishing the team's work and several other scientific journals taking note.· 以上资料由
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