Question

In: Mechanical Engineering

Provide a description of the working principles of the following micro-sensors: 1.) chemical 2.) optical 3.)...

Provide a description of the working principles of the following micro-sensors:

1.) chemical

2.) optical

3.) acoustic wave

4.) pressure

5.) thermal

Expert Solution

1. Chemical Micro-Sensor

2. Optical Micro - Sensor

3. Acoustic Wave Micro- Sensor

The basic principle of operation for a generic acoustic-wave sensor is a traveling wave combined with a confinement structure to produce a standing wave whose frequency is determined jointly by the velocity of the traveling wave and the dimensions of the confinement structure. Consequently, there are two main effects that a measurand can have on an acoustic-wave microsensor: the wave velocity can be perturbed or the confinement dimensions can be changed. In addition, the measurand can also cause a certain degree of damping of the travelling wave.

4. Pressure Micro- Sensor

samet mamat answered 2 years ago

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