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Presentations

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aging environments. The incomplete knowledge about MEMS surfaces and their role in determining fracture and fatigue mechanisms has resulted in designers adopting “rules of thumb” which ensure large safety margins. Such conservative designs result in lower sensitivities for devices that depend on the absolute amplitude of motion, such as vibratory rate gyroscopes, and limit the range of microactuators in applications such as micro-optical scanners. The expansion of MEMS into new applications, especially those involving contact or exposure to harsh environments, has been hamstrung by the lack of basic understanding of structural surfaces, surface coatings, and microencapsulation processes and how they impact the performance of MEMS.