On Chip Counting and Localisation of Magnetite Pollution Nanoparticles

Abstract

Magnetic nanoparticles are generally smaller than 200 nm and can easily enter the human brain through the respiratory system. The harm that such nanoparticles can cause may lead to the loss of human life. This paper focuses on the modelling and simulation of a new kind of magnetic sensor, which can detect and localize these magnetite nanoparticles. The proposed sensors can help prevent these nanoparticles from polluting the environment, which will undoubtedly reduce their adverse risks to humans. The modelled magnetic sensor consists of a tunnelling magnetoresistive sensor, a conducting line, and magnetite nanoparticles. The localization and quantization of the magnetic nanoparticles can be realised by analysing different output voltages of the TMR sensor.