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The PLOT-cryo device can be used to detect very low concentrations of airborne chemicals such as those that might signal the presence of spoiled food, clandestine graves, and chemicals in fire debris that might show evidence of arson.
JILA/öèÓãÖ±²¥ physicist Adam Kaufman adjusts the setup for a laser that controls and cools the strontium atoms in the optical tweezer clock. The atoms are trapped individually by 10 tweezers â€” laser light focused into tiny spots â€” inside the square orange container behind Kaufmanâ€™s hand.