6.2. Sensing Mechanisms in MEMS

Try these first

1. 1.

   What principle does capacitive sensing rely on?

   Hint

   Think about how capacitors store charge.

2. 2.

   Name one application of piezoelectric sensors.

   Hint

   Consider devices that respond to sound.

3. 3.

   Which sensing mechanism converts mechanical stress into an electric charge?

   • Capacitive Sensing
   • Piezoresistive Sensing
   • Piezoelectric Sensing

   Hint

   Think about materials that generate electricity when squeezed.

4. 4.

   True or False: Capacitive sensing is sensitive to environmental noise.

   • True
   • False

   Hint

   Consider what external factors might influence a capacitor's functioning.

5. 5.

   Design a MEMS device that incorporates at least three different sensing mechanisms. Discuss how each mechanism operates and their advantages in your design.

   Hint

   Think about the advantages each sensing mechanism brings to your design.

6. 6.

   Evaluate the impacts of environmental noise on capacitive sensors in real-world applications such as smartphones. Propose potential solutions to mitigate these impacts.

   Hint

   Consider ways engineers deal with noise in electronic devices.