Timur Muksunov, research engineer at the SPhTI Laboratory for Security Methods, Systems and Technologies has created a gas analyzer - "electronic nose" that is able to assess the quality of the food, cosmetic, and medical products, to diagnose diseases by human exhaled gases, and even detect explosives and drugs.
The device analyzes a gas mixture using semiconductor sensors.
However, according to the scientist, it is impossible to make a sensor that reacts to only one gas – the system is needed to achieve sensitivity and selectivity. This allows, when using certain processing techniques, accurately recognizing the gas mixture in the air. Experiments confirm this.
One of them was determining the freshness of fruits and vegetables. Fruits and vegetables emit hydrogen sulphide, ammonia, and other gases. The closer the date of writing off the products, the more of these gases are in the air.
The device is fully developed, now there is a test of its effectiveness. The work is conducted in conjunction with the Radiophysics Faculty of TSU.