Comprehensive Performance Study of Magneto Cantilevers as a Candidate Model for Biological Sensors used in Lab-on-a-Chip Applications

Abstract

In recent years, demand for biological sensors which are capable of fast and accurate detection of minor amounts of pathogens inreal‑time form has been intensified. Acoustic wave (AW) devices whose performance is determined by mass sensitivity parametersand quality factor are used in biological sensors as platforms with high quality. Yet, current AW devices are facing many challengessuch as the low value of their quality factor in practical applications and also their difficulty to use in liquids. The main focus of this articleis to study on the magnetostrictive sensors which include milli/microcantilever (MSMC) type. In comparison with AW devices, MSMChas a lot of advantages; (1) its actuation and sensing unit is wirelessly controlled. (2) Its fabrication process is easy. (3) It works wellin liquids. (4) It has a high‑quality factor (in the air > 500). Simulation results demonstrate that the amount of quality factor depends onenvironment properties (density and viscosity), MSMC geometry, and its resonant behavior of harmonic modes.