作者: Jingxiang Su , Florian Niekiel , Simon Fichtner , Christine Kirchhof , Dirk Meyners
关键词: Piezoelectricity 、 Resonance 、 Vector field 、 Piezoelectric actuators 、 Magnetic field 、 Materials science 、 Resonator 、 Microelectromechanical systems 、 Optoelectronics 、 Dc voltage
摘要: This paper reports on frequency tunable MEMS magnetoelectric sensors. Different designs are studied in respect to voltage coefficient and tunability. Compared state-of-the-art ME sensors, the presented resonators display a highly reversible linear tuning, enabled by applying DC piezoelectric actuators. A shift of up 0.2 Hz/V is demonstrated for sensor with limit detection 128 pT/Hz0.5 at resonance 13 kHz. type particular interest vector field sensors arrays bio-magnetic applications, where either identical frequencies or precisely defined spacing required.