Applications and Advances of Magnetoelastic Sensors in Biomedical Engineering: A Review

Abstract

We present a comprehensive investigation into magnetoelastic sensors (MES) technology applied to biomedical engineering. This includes the working principles, detection methods, and application fields of MES technology. MES are made of amorphous metallic glass ribbons and are wireless and passive, meaning that it is convenient to monitor or measure the parameters related to biomedical engineering. MES are based on the inverse magnetoelastic (Villari) effect. When MES are subjected to mechanical stress, their magnetic susceptibility will change accordingly. And the susceptibility of MES is directly related to their magnetic permeability. The varying permeability can positively reflect the applied stress. The various detection methods that have been developed for different field applications include measurement of force, stress, and strain, monitoring of various chemical indexes, and consideration of different biomedical parameters such as the degradation rate and force conditions of artificial bone, as well as various physiological indexes including ammonia level, glucose concentration, bacteria growth, and blood coagulation.

Ultrasensitive Magnetic Field Sensors for Biomedical Applications

“…This is useful in the mechanical detection of loads on orthopedic implants or in vivo monitoring of the force information in bones and joints. The same group also published a comprehensive investigation of various applications of magnetoelastic sensors in biomedicine [21]. An investigation of monitoring "after injury" stress in bones and on the osteomalacia effects with the use of Fe 76 Cr 2 Mo 6 B 15 Cu 1 microwires as magnetoelastic sensors is made by the Kozejova et al [223].…”

“…A list of the common and modern magnetic field sensors with the potential to be used for the detection of biomagnetic signals (magnetocardiography (MCG), magnetoencephalography (MEG), magnetomyography (MMG), magnetoneurography (MNG)) and for point-of-care devices[18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35].…”

Perspectives on smart stents with sensors: From conventional permanent to novel bioabsorbable smart stent technologies

“…Wireless, passive magnetoelastic sensors based on iron-based metallic glass ribbons when applied with an alternating magnetic field can determine mass loading or viscosity variations based on the resonant frequency variations (Ren, Yu, & Tan, 2019). Magnetoelastic sensors bonded to the interior walls of a strontium ferrite-coated Co-Cr alloy stents were used to evaluate intimal proliferation in vivo (Green, Kwon, Elta, & Gianchandani, 2010).…”

Modelling the Characteristics of Ring-Shaped Magnetoelastic Force Sensor in Mohri’s Configuration

“…One of emerging direct µ r (σ) approaches is the SI (Stress-impedance) effect [3] and change of magnetic anisotropy direction [4], while advanced material studies show magnetomechanical influence on unbalanced small angle magnetization rotation (SAMR) [5], Matteucci [6], or even thermoelectric [7] voltage. Due to their robustness, sensitivity and reliability [8,9] magnetoelastic sensors are intensively developed for the most demanding industrial [10] and biomedical [11] applications.…”