Creasing to cratering: Voltage breaks down plastic
DURHAM, N.C.— A Duke University team has seen for the first time how soft polymers, such as wire insulation, can break down under exposure to electrical current.
Researchers have known for decades that polymers, such those insulating wires, may break down due to deformation of the polymers. But the process had never been seen.
In a series of experiments, Duke University engineers have documented at the microscopic level how plastic deforms to breakdown as it is subjected to ever-increasing electric voltage. Polymers can be found almost everywhere, most commonly as an ...

