@@ 1 IntroductionrnMEMS (Micro ElectroMechanical System) based on semiconductor microfabrication plays important roles for example in the periphery of IT systems. NEMS (Nano ElectroMechanical System) contains nano-scale structures. Sophisticated and high performance systems based on the MEMS and the NEMS have been developed. Packaging and electrical interconnection play an important role in realizing practically applicable systems[1].
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