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New 3D printer ink makes recyclable electric circuits without heat or light | Researchers from the US and Korea have developed a new 3D printable ink that solidifies in salt water and is easily recyclable using just fresh water
Polymer solidifies in salt water, then dissolves again in fresh water
Scientists from the U.S. and Korea have developed an innovative new ink for 3D printing that can build easy-to-recycle electric circuits and other structures without the need for heat, light, or toxic chemicals. (Image credit: nature communications) The researchers extruded the polymer using a commercial healthcare-grade 3D printer to pump the material into mixtures of calcium chloride and water. (Image credit: nature communications) Senior author Professor Jinhye Bae from the University of California, San Diego, pointed out that the method “is all done under ambient conditions, with no need for additional steps, specialized equipment, toxic chemicals, heat or pressure.” Since the polymer is easily reverted to its raw state, structures made with PNIPAM could be useful for disposable electronics, robotic components, and prototyping.
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