Stanford researchers synthesize printable, electrically conductive gel | Stanford News Release: Because the material doesn't solidify until the last step of its synthesis, it can be printed or sprayed as a liquid and turned into a gel after it's already in place – meaning that manufacturers should be able to construct intricately patterned electrodes at low cost...
Most hydrogels are tied together by a large number of insulating molecules, reducing the material's overall ability to pass electrical current. But phytic acid is a "small-molecule dopant" – meaning that when it links polymer chains, it also lends them charge. This effect makes the hydrogel highly conductive.
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