Fully encapsulated sub-millimeter accelerometers

Woo Tae Park, Rob N. Candler, Vipin Ayanoor-Vitikkate, Markus Lutz, Aaron Partridge, Gary Yama, Thomas W. Kenny

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

In this paper we present design, fabrication, and characterization results for the smallest published fully-packaged accelerometers. The miniaturization is realized by utilizing an advanced packaging scheme using a thick film epitaxial grown polysilicon encapsulation technique. Using this approach, released, encapsulated MEMS devices can be fabricated with exterior dimensions only 10s of microns larger than the micromechanical element. This advantage enables us to make accelerometers almost 2 orders of magnitude smaller than others. We have fabricated accelerometers as small as 0.034mm3 (387×387× 230μm) with noise floor of 0.25mg/sqrt(Hz).

Original languageEnglish
Article numberTPa26
Pages (from-to)347-350
Number of pages4
JournalProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
StatePublished - 2005
Event18th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2005 Miami - Miami Beach, FL, United States
Duration: 30 Jan 20053 Feb 2005

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