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This research advances the application of quantum sensing technologies by utilizing nitrogen-vacancy center diamonds for non-invasive biomedical imaging at room temperature. The development of low-power Ramsey-based magnetometers represents a significant step toward practical, portable devices capable of detecting weak biological magnetic fields without cryogenic cooling.

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Detecting the body's magnetic fields with a low-power Ramsey-based magnetometer

Phys.org22 iulie 20261 min de cititArticolul și perspectiva sunt în engleză.

Our bodies generate extremely weak magnetic fields as electric currents flow through the heart, brain and other tissues. These signals are used in magnetocardiography and magnetoencephalography to assess heart function and brain activity, respectively. These fields can be detected at room temperature using diamond sensors containing nitrogen-vacancy (NV) centers, in which a carbon atom is replaced by a nitrogen atom adjacent to an empty lattice site.

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