Wireless Magnetoelastic Physical, Chemical, and Biological Sensors

Magnetoelastic sensors belong to the class of resonator sensors and can be considered the magnetic analog of piezoelectric sensors; tracking the resonance behavior, typically characterized by the resonance frequency and/or amplitude, enables a wide variety of applications, including chem/bio-sensing and environmental monitoring. The practical use of the sensors is facilitated with the smart microprocessor-based monitoring electronics that accurately and efficiently characterizes the pulsewise excited sensor response. The low cost and remote query nature of the sensors make the sensor platform ideally suited for applications where the sensors have to be placed inside sealed, optically opaque containers and disposable use is desired. The applications of the sensors described herein are focused on, but not limited to, the quantification of endotoxin concentrations, blood coagulation monitoring, the measurement of gastroesophageal pH, and glucose sensing