Portable Magnetometry for Detection of Biomagnetism in Ambient Environments
M.E. Limes, E.L. Foley, T.W. Kornack, S. Caliga, S. McBride, A. Braun, W. Lee, V.G. Lucivero, M.V. Romalis
Abstract
The authors report a striking advance in measuring tiny magnetic fields under ambient conditions, using atom--light-interaction techniques enabled by cutting-edge technology. A prototype sensor detects the magnetic fields generated by the human brain or heart, in a field-deployable system that works with great sensitivity, unshielded in Earth's own magnetic field. This technology is scalable to arrays and can be made low-cost, which opens pathways to a wide variety of applications, such as field triage, brain-machine interfaces, and magnetic navigation.
Topics & Concepts
BiomagnetismMagnetometerMagnetic fieldPhysicsScalabilityField (mathematics)GradiometerComputer scienceMaterials scienceElectrical engineeringAcousticsMagnetic particle inspectionInterference (communication)Magnetic noiseMagnetic nanoparticlesAtomic and Subatomic Physics ResearchCharacterization and Applications of Magnetic NanoparticlesQuantum optics and atomic interactions