The lightest element on the periodic table, Hydrogen gas is highly flammable and difficult to detect but scientists in Iranian Islamic Azad University have succeeded in designing a sensor to alert hydrogen leak before any disaster.
As a fuel, hydrogen is used in many places however human inability in detecting it makes it very dangerous but not for those who have this sensor.
One of the researchers involved in the project Leyla Fekriavval, told Mehr News that their MOS sensor which is an electrical conductive, absorbs hydrogen near ambient conditions, and relays a signal in less than two minutes before reaching the range of concentrations between 4% and 75% by volume.
Professor Seyed Mohammad Elahi, Professor Elham Darabi, and Professor Seyed Ali Sebt were the other members of the research team along with Leyla Fekriavval.
Sensors and Actuators B: Chemical is the scientific journal that has released the details of this original research paper. It is an interdisciplinary journal dedicated to covering research and development in the fields of chemical sensors, actuators and microsystems.
You can find the full article in pages 367-373 of the volume 216 of the journal. The title of the paper is Comparison of the MOS capacitor hydrogen sensors with different SiO2 film thicknesses and a Ni-gate film in a 4% hydrogen–nitrogen mixture.