Description
Magnetic-field sensors are important for applications including biomagnetic measurements, navigation, geophysical surveying, and communications in electromagnetically challenging environments. On-chip optomechanical magnetometers provide a route towards compact, room-temperature, deployable sensors by combining magnetically responsive mechanical elements with precise optical readout.
Recent silicon-on-insulator optomechanical magnetometers have demonstrated chip-scale magnetic sensing using photonic crystal optical readout and magnetically responsive mechanical structures. In parallel, frequency-conversion approaches enable low-frequency magnetic signals to be transduced away from dominant technical noise, providing a route towards operation from kHz down to mHz.
Together, these developments show how optomechanical magnetometers can be engineered for a small footprint, high-bandwidth operation, and practical deployment, supporting continued progress towards real-world magnetic sensing applications.
| I am the presenting author | Yes |
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