Draw your own circuits with liquid metal – Chembites

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Featured Image: Imagefrom blickpixel on PixabayTitle: Rewritable, Printable Conducting Liquid Metal HydrogelAuthors: Jung-Eun Park, Han Sol Kang, Jonghyek Baek, Tae Hyun Park, Seunghee Oh, Hyungsuk Lee, Min Koo, and Cheolmin ParkJournal: ACS NanoYear: 2019Researchers at Yonsei University in South Korea have developed a new material that represents a leap in flexible electronics. It can be incorporated into materials ranging from smart clothing to bendable screens. By combining polymer chemistry with liquid metal particles, the circuits formed are not only flexible, but also easily “rewritable,” letting the circuit be erased and redrawn in a matter of minutes.The material is mainly made of a hydrogel, a network of hydrophilic(“water-loving”) polymer that can absorb huge amounts of water. Specifically, the researchers used the polymer poly(ethylene glycol) diacrylate (PEGDA), which can be made into a solid hydrogel by adding a photoinitiator, which reacts when exposed to UV light to…