Abstract:An alternative wire joining method is explored that utilizes femtosecond laser pulses directed towards the contact point of two pieces of 25-µm diameter Au bonding wires typically used in microelectronic wire bonding. The two pieces are in the form of wire loops bonded onto four terminals in a crossing pattern. In-situ four-wire measurement is used to measure the contact resistance at the contact point of the crossed wires before and after femtosecond laser irradiation. A greater decrease in contact resistance… Show more
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