Tag Archives: liquid nitrogen

Flawed Diamonds Promise Sensory Perfection

Berkeley Lab researchers and their colleagues extend electron spin in diamond for incredibly tiny magnetic detectors

From brain to heart to stomach, the bodies of humans and animals generate weak magnetic fields that a supersensitive detector could use to pinpoint illnesses, trace drugs – and maybe even read minds. Sensors no bigger than a thumbnail could map gas deposits underground, analyze chemicals, and pinpoint explosives that hide from other probes.

Now scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley, working with colleagues from Harvard University, have improved the performance of one of the most potent possible sensors of magnetic fields on the nanoscale – a diamond defect no bigger than a pair of atoms, called a nitrogen vacancy (NV) center. (more…)

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Science Xplained: Ice cream chemistry

Ainissa Ramirez, associate professor of mechanical engineering, describes the science behind a tasty bit of chemistry — ice cream. She shows how to make ice cream using liquid nitrogen, which is as cold as the surface of Neptune, and describes why these cold temperatures makes ice cream, creamier. She demonstrates how our knowledge of how […]

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