Optical fiber-based magnetically-tuned graphene mechanical resonator

In this study, an optical fiber-based magnetically-tuned graphene mechanical resonator (GMR) is demonstrated by integrating superparamagnetic iron oxide nanoparticles on the membrane. The resonance frequency shift achieved tuning tension of membrane with a magnetic field. A tunability 23 kHz using 100 mT field achieved. device provides new way to tune GMR non-contact force. It could also be used for weak detection in future further improvements sensitivity.