The use of a poly polymer as a passivation or gate dielectric layer in thin film transistors. open circuit voltage curve for a lithium-ion battery cell as it ages. A pull wire also runs through the interior bore of the sheath, preferably within a lumen. This process of segment curve creation is repetitively executed from the starting point to the ending point of the command point sequence to create a machining curve. The pressure transducer then generates and transmits a signal indicating a loss of joint integrity.