A system and method publish, distribute and redeem coupons on a network system. The cross-linking agent includes a peroxide and a sulfur. In addition the device further include an electronic circuit structured to receive and process the signals generated by the first and second sensors, and to determine presence of the at least one targeted substance of interest. The method can further include promoting re-sputtering of copper on vertical surfaces on the wafer by coupling HF or LF power to the wafer.