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MEMs

MEMs
ACTUATORS: Eigenmodes of a piezoelectrically actuated single-crystal silicon plate resonator. Model and picture courtesy: A. Jaakkola, VTT Microtechnologies Anturit, Finland

The design and modeling of microscale electro-mechanical systems (MEMS) is a unique engineering discipline. At small length scales, the design of resonators, gyroscopes, accelerometers, and actuators must consider the effects of several physical phenomena. MEMS devices and sensors may even utilize multiphysics phenomena for its very function or for increased sensitivity. To this end, the MEMS Module provides user interfaces for electromagnetic-structure, thermal-structure, or fluid-structure interactions. A variety of damping phenomena can be included in a model: thin-film gas damping, anisotropic loss-factors for solid and piezo materials, as well as anchor damping. For elastic vibrations and waves, perfectly matched layers (PMLs) provide state-of-the-art absorption of outgoing elastic energy.

A best-in-class piezoelectric tool allows for simulations where composite piezo-elastic-dielectric materials can be combined in any imaginable configuration. The MEMS Module includes analyses in the stationary and transient domains as well as fully-coupled eigenfrequency, parametric, quasi-static, and frequency response analyses. Lumped parameter extraction of capacitance, impedance, and admittance and connections to external electrical circuits via SPICE netlists are made easy. Built upon the core capabilities of COMSOL Multiphysics, the MEMS Module can be used to address virtually any phenomena related to mechanics at the microscale.

 

Application Area

  • Accelerometers
  • Actuators
  • Bulk Acoustic Wave (BAW) devices
  • Cantilever beams
  • Fluid-structure interaction (FSI)
  • Hall sensors
  • MEMS capacitors
  • MEMS gyroscopes
  • MEMS resonators
  • MEMS thermal devices
  • Piezoelectric devices
  • Piezoresistive devices
  • RF MEMS devices
  • Sensors
  • Structural contact and friction
  • Surface Acoustic Wave (SAW) devices
Product Information

File Format:
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User Stories:
Mems Biosensor

Models

 

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