Xerox says it has developed a conductive ink that creates a low-cost method to add computing power to plastic and other surfaces. One potential application is a “smart” pill box that tracks how much medication a patient has taken.
One of the technical breakthroughs was development of a conductive ink with a melting point below that of plastic. The silver ink has a melting point of 140C, compared to 267C for polycarbonate. Melting points for commodity plastics, such as polyethylene, are much lower and would not be used with the new inks.