Detection of Virus-Like Particles Using Magnetostrictive Vibration Energy Harvesting

In preparation for new epidemics of infectious diseases caused by viruses, self-powered biosensors based on magnetostrictive materials are attracting attention. This study evaluated the energy harvesting performance of the Fe-Co/Ni clad plate cantilever and demonstrated its ability to detect viruses using silica (virus-like) particles. The Fe-Co/Ni clad plate cantilever had an output power of similar to 0.414 mW (similar to 12.2 mW/cm(3)). Assuming that all virus-like particles adhered to the Fe-Co/Ni clad plate cantilever, it was implied that the Fe-Co/Ni clad plate cantilever could detect a mass of 0.1-1 mu g. As a result, the Fe-Co/Ni clad plate cantilever could lead to the development of a self-powered virus sensor.