11. The RC time constant associated with contact resistance can limit the frequency response of devices. 12. In this design, the contact resistance in the area of the schoopage is the lowest. 13. It also avoids any inaccuracy because of contact resistance . 14. Separation of current and voltage electrodes eliminates the lead and contact resistance from the measurement. 15. The three electrode systems such as transistors require more complicated methods for the contact resistance approximation. 16. The measurement of contact resistance is most simply performed using a transmission line method is typical. 17. Coating contact surfaces with platinum can reduce achievable contact resistance to as low as 3 k?. 18. The mercury surface is self-restoring after an arc, and the contact resistance is low and stable. 19. Thus the sheet resistance as well as the contact resistance can be determined from this technique. 20. Therefore, the linear extrapolation of total resistance to the zero channel length provides the contact resistance .
