INK is an age-old medium, yet it’s keeping up with changing times. It’s long been used in pens, of course, and more recently in printer cartridges, but now it’s also being mixed to print lightweight circuits, sensors and switches. Circuits made with conductive inks that can withstand the rigors of pressure, heat and moisture are replacing copper wire and bulky connections in many new products. The ink circuits, typically made with a range of conductive materials, are printed on surfaces like plastic, cloth and paper……

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