Recent events show that the level of terrorist threat has increased significantly, so national governments are looking for new ways to effectively detect weapons and explosives that can be used to attack innocent people. Researchers at University College London have decided to help by developing a prototype sensor.
Explosive loads have been detected for several years by special trained dogs that can detect the molecules of substances in their composition. The drawback of such solutions is that sensors typically detect one kind of charge, while terrorists can bomb with much more components. This therefore requires the installation of additional sensors, which significantly increases the cost of such systems, and also makes their work significantly longer.
University College London researchers have resolved this problem by developing a prototype sensor that can simultaneously identify five different types of explosives. The sensor was developed to detect the most commonly used industrial explosive and military explosives such as land mines as well as RDX and PETN, most commonly used in bomb attacks.
The sensor uses the technology of quantum dots, emitting light particles designed to react in contact with certain types of explosives. The device then analyzes the light by identifying the components of each of the loads, even if several different ones are used.