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Electron Spin Control of Nanoparticles Could Advance Sensor Technology

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A technique used to detect and control the electron spin resonance (ESR) of nanodiamonds in a vacuum chamber may lead to the development of novel sensors for detecting, measuring and monitoring gases. It may also provide a future template for the testing of quantum physics at the macroscopic level using nanoparticles. Researchers at Purdue University demonstrated the electron spin control and direct temperature measurement of nitrogen vacancy centers (NVCs) in nanodiamonds, which they optically levitated in a low vacuum using a 1,550-nm laser. A schematic of an optical tweezer used...Read full article

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