Metal-insulator transition (MIT) materials for biomedical applications

Transitional metal oxides get considerable interest in electronics and other engineering applications over few decades These materials show several orders of magnitude metal insulator transition MIT triggered by external stimuli Bio sensing using Vanadium dioxide VO a MIT material is largely unexplored In this short article we investigate the VO based thermal sensor performance for measuring the biomolecule concentration Active sensing layer is chromium and niobium co doped VO as it shows deg C temperature coefficient of resistance TCR with practically no thermal hysteresis Our study demonstrated that VO based microsensors can be used to measure the biomolecule concentrations which produce temperature changes in the mK range For mK change in temperature the maximum detection voltage is near V