MICRO-602 / 1 credit
Teacher: Boero Giovanni
Remark: Next time in Spring 2024
Every 2 years
The course provides the basis to understand the physics, the key performance, and the research and industrial applications of magnetic sensors and actuators. Together with a detailed introduction to magnetism, several magnetic sensors and actuators are studied.
1. Basics of magnetism
Maxwell laws. Free and bounded currents. Magnetic dipoles. Applications of Biot-Savart, Ampere, and Faraday-Lenz laws. Eddy currents and skin effect.
2. Magnetism in matter
Diamagnetism. Paramagnetism. Ferromagnetism. Magnetostatic calculations. Force, torque, magnetic levitation. Galvanomagnetic effects in matter.
3. Magnetic field sensors sensors & actuators (principles, key-performance, applications, ....)
Hall sensors. Anisotropic magneto resistance (AMR) and giant magneto resistance (GMR) sensors. Fluxgates sensors. Superconducting quantum interference devices (SQUIDs). Mechanical cantilever-based magnetometers. Magneto-optical sensors. Inductive proximity sensors. RF and magnetic tags, other sensors.
4. Magnetic imaging
Magnetic force microscopy (MFM), scanning Hall probe microscopy (SHPM), Magnetic resonance imaging (MRI), other methods.
Atomic magnetism. From magnetic atoms to magnetic solids. Exchange and anistropy. Superparamagnetism. Magnetic micro and nanoparticles. Magnetic data storage.
Magnetostatics, Hall effect devices, magnetic resonance, magnetometry, magnetic sensors
Basic knowledge in physics and mathematics
In the programs
- Number of places: 20
- Exam form: Oral (session free)
- Subject examined: Micro-magnetic field sensors and actuators
- Lecture: 14 Hour(s)