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Laser Pulse Combo Sniffs Out Trace Toxic Gases

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A combination of IR laser pulses and terahertz radiation (T-ray) is giving scientists a nose-up on toxic gases. This technology can sniff out even trace amounts of harmful gases in the air – such as from a chemical spill or nerve gas attack – from up to 1 km away. Researchers at both Duke University and the U.S. Army Aviation and Missile Research, Development and Engineering Center (AMRDEC) have had a hand in developing the sensing technology, which can differentiate between various types of gases and chemicals under normal atmospheric pressure. The technique could...Read full article

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