Ren Limin, Yu Kun, Tan Yisong
School of Mechanical Engineering, Northeast Electric Power University, Jilin 132012, China.
Materials (Basel). 2019 Apr 7;12(7):1135. doi: 10.3390/ma12071135.
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.
我们对应用于生物医学工程的磁弹性传感器(MES)技术进行了全面研究。这包括MES技术的工作原理、检测方法和应用领域。MES由非晶态金属玻璃带制成,具有无线和无源的特点,这意味着监测或测量与生物医学工程相关的参数非常方便。MES基于逆磁弹性(Villari)效应。当MES受到机械应力时,其磁化率会相应变化。并且MES的磁化率与它们的磁导率直接相关。磁导率的变化能够积极反映所施加的应力。针对不同领域应用开发的各种检测方法包括力、应力和应变的测量、各种化学指标的监测,以及考虑不同的生物医学参数,如人工骨的降解速率和受力情况,还有各种生理指标,包括氨水平、葡萄糖浓度、细菌生长和血液凝固。