3D-feature-based structure design for silicon fabrication of micro devices |
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Authors: | Yang Liu Pingyu Jiang Dinghong Zhang Guanghui Zhou |
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Affiliation: | (1) State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, 710049, China |
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Abstract: | To make MEMS structure design in a more intuitive way, and to support the “function to 3D shape to mask” design flow, a 3D
feature based structure design framework and its corresponding key enabling techniques are presented on the basis of inverse
design processes and top-down design methodologies. Driven by space mapping among function and structure, the feature model
and its parameters are restricted with the bond graph represented simulation model, which is constructed with functional components
in simulation library at the system-level. Conforming design rules, the hierarchic feature information model is established
and finally can be cascaded down to a group of 3D feature nodes, which are all silicon fabrication oriented and defined on
the top of CSG/B-rep 3D solid models. Surrounding this feature information model, the 2D mask deducing and fabrication parameters
extraction at the fabrication-level can be performed for manufacturability checking, design/fabrication conflict feedback
and fabrication process sequence generation. Taking a micro gap-closing actuator as an example, the structure design process
is demonstrated in terms of this 3D feature modeling methodology. |
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Keywords: | |
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