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A laser that can detect traces of explosives on a zipper. Photo: Michigan State University

Laser-based devices in mirrored devices will be able to detect explosives even if they are hidden in zippers

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Inside the sensor, air from the environment passes through a twisted structure of nanotubes. If a PETN molecule enters the nanotube, its electrical conductivity changes, and this change is measurable. Courtesy Darmstadt University/ Mario Boehme

Nanosensors for detecting explosives

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