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发明公开
CN103864005A 通过沉积纳米团簇减小MEMS静摩擦力 无效 - 撤回

通过沉积纳米团簇减小MEMS静摩擦力
摘要：
本发明涉及通过沉积纳米团簇减小MEMS静摩擦力。本发明提供了一种机制，用于通过减少可以紧密接触的两个表面之间的表面积来降低一个MEMS装置中的静摩擦力。通过增加一个或两个表面的表面粗糙度来实现接触表面积的降低。在形成MEMS装置中，通过在使用的牺牲层上形成微掩模层，并且然后蚀刻所述牺牲层的表面提供了增加的粗糙度。可以使用纳米团簇（520）来形成微掩模层。当在牺牲层（810）之上形成MEMS装置的下一个部分时，该部分将呈现通过蚀刻工艺所施加到牺牲层上的粗糙度特性。在MEMS装置中，更粗糙的表面（910）降低了可用于接触的表面积，并且，反过来，降低了通过表面可以被施加静摩擦力的面积。
摘要（英）：

A mechanism for reducing stiction in a MEMS device by decreasing surface area between two surfaces that can come into close contact is provided. Reduction in contact surface area is achieved by increasing surface roughness of one or both of the surfaces. The increased roughness is provided by forming a micro-masking layer on a sacrificial layer used in formation of the MEMS device, and then etching the surface of the sacrificial layer. The micro-masking layer can be formed using nanoclusters. When a next portion of the MEMS device is formed on the sacrificial layer, this portion will take on the roughness characteristics imparted on the sacrificial layer by the etch process. The rougher surface decreases the surface area available for contact in the MEMS device and, in turn, decreases the area through which stiction can be imparted.

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