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Keynote Talk

Prof. Ruma Ghosh

IIT Dharwad, India

2D Semiconducting Nanomaterials based Resistive Sensors for Air Pollutant Detection

 

The data from World Health Organization (WHO) indicates that 99% of the world population breathes the air that exceeds the WHO limits of air pollutants. Inhaling air pollutants increases the risk of respiratory tract disorders including chronic obstructive pulmonary diseases, lung cancer, ischemic heart disease, and stroke. Acknowledging the severity of air pollution, several countries have formed regulatory bodies for pollution control which monitor concentrations of some of the hazardous pollutants continuously. However, the pollutant concentrations vary temporally and spatially. Therefore, the development of portable sensors of the pollutant and their integration with wearables to facilitate crowd sourcing is the most efficient way for detection of the air pollution and emerging with accurate check measures. This talk would discuss the efforts made by our group towards development of two-dimensional materials based resistive sensors for pollutants like NO2, CO, etc. The synthesis of the 2D materials were done using facile top-down method and hence, were required to be characterized using sophisticated characterization techniques like atomic force microscope, field emission scanning electron microscope, and UV-Visible spectroscopy. The interesting observations made during this research would be presented.

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