We present a noninvasive flow metering technique that employs optically pumped magnetometers (OPMs) for measuring fluid flow velocities through a novel magnetic-marking approach. The method utilizes polarized hydrogen nuclei within the fluid, which are polarized with a permanent magnet. Radio frequency (RF) pulses are applied to the fluid to create local magnetic marks in the otherwise...
Monitoring blood circulation, known as hemodynamic monitoring, is vital for assessing patient health. However, obtaining detailed blood flow information non-invasively remains a challenge. To address this, we developed a system that uses strong permanent magnets and optically pumped magnetometers to detect the flow of a pulsed liquid. Our setup enables us to track polarised water moving...
Optically pumped magnetometers have been integral to scientific space applications since the 1960s [1]. They not only explore the Earth’s magnetic field aboard missions such as Swarm (since 2013) [2] and CSES-1 (since 2018) [3], but also the magnetic fields of other planets and their moons. Notable missions include Pioneer 11 (Jupiter flyby in 1974), Mariner 10 (Mercury flyby in 1974) and...
The Coupled Dark State Magnetometer (CDSM) is a magnetometer developed by the Space Research Institute of the Austrian Academy of Sciences in cooperation with the Graz University of Technology. It is a optically pumped scalar magnetometer based on two-photon spectroscopy of free alkali atoms (Rubidium 87).
The CDSM is currently operating on three space missions and will have launched on a...
