A new chip with microscopic chemical sensors is able to smell explosives in the air at a concentration of the order of a molecule per quadrillion, which is a million times more sensitive than modern sensors. An article about this development was
published in the journal Nature Communications.

During the tests, he proved to be effective at a distance of up to five meters in the air heavily polluted by cigarette smoke. As we are talking about fundamental research, in everyday life, scanners based on this development will not appear soon, Gizmodo
writes .
Clusters of nano-sized transistors, which are extremely sensitive to chemically induced changes in their electrical conductivity during surface contact (
phys.org ), serve as the “nose” of the chip.