Researchers at Okayama University have developed a groundbreaking method for creating nanodiamond sensors with nitrogen-vacancy centers, paving the way for advanced quantum sensing and bioimaging applications. These sensors offer exceptional sensitivity for detecting minute changes in electrical, thermal, and magnetic fields, promising to revolutionize healthcare, technology, and environmental monitoring.
Researchers at Japan’s Okayama University have developed nanodiamond sensors that can lead to the development of advanced quantum sensors and bioimaging applications. Quantum-grade bioimaging will allow doctors to produce highly detailed and accurate images of cells, tissues, and organs — drastically improving detection and treatment of deadly diseases.
Both these quantum technologies have the potential to transform health care, technology, and environmental management, improving quality of life and providing sustainable solutions for future challenges, says Masazumi Fujiwara, one of the researchers and an associate professor at Okayama University. Whether it is quantum sensing or bioimaging, both rely on harnessing the quantum properties of particles such as spin state, entanglement, and superposition. Nanodiamonds with nitrogen-vacancy centers have exceptional sensitivity when it comes to detecting tiny changes in the electrical, thermal, and magnetic behavior of objects — making them a promising quantum sensor material. This is because when a nitrogen atom replaces a carbon atom in the diamond, it leaves a small empty space (a vacancy) next to it. This NV vacancy center gives the nanodiamonds unique properties, like the ability to glow under certain light and detect tiny magnetic or electric fields. Creating nanodiamonds with NV centers has been a big challenge for scientists. Almost every time they attempted to do so, it resulted in diamonds with impurities and unstable spin states. Fujiwara and his team overcame this challenge with a controlled NV center creation approach. They first grew a diamond crystal with 99.99%C atoms. Next they added nitrogen at 30 to 60 parts per million concentration into the crystal. However, since not every nitrogen atom forms a vacancy, so the final NV center concentration in the diamond was one part per million. The researchers then broke down the crystal into many tiny pieces, mixed it into water, and then dropped it onto glass coverslips that had grid pattern
QUANTUM SENSING BIOMAGING NANODIAMONDS NITROGEN-VACANCY CENTERS OKAYAMA UNIVERSITY
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