Replication of atomically smooth surface shape onto electroplated Au patterns by lift-off process and room-temperature AuAu bonding in atmospheric air
We demonstrated an atomically smooth surface on electroplated Au patterns. The Au surface is created by a lift-off process using a thin sacrificial layer. We examined room-temperature bonding of the smooth Au surface in atmosphere. A high bonding strength of about 250MPa was obtained. Fracture from bulk Si was observed after tensile tests.
electroplating lift-off process room-temperature bonding micro-electromechanical systems (mems) packaging