Clandestine mine reconnaissance is the Navy's highest MCM priority. During the 1980's, the Superconducting Gradiometer/Magnetometer Sensor (SGMS) was demonstrated in the Magnetic and Acoustic Detection of Mines (MADOM) ATD to provide effective detection/classification capabilities, especially against buried mines, and to reduce significantly acoustic false alarms arising from bottom clutter [1]...

Magnetic Resonance finds countless applications, from spectroscopy to imaging, routinely in almost all research and medical institutions across the globe. It is also becoming more frequently used for specific applications in which the whole instrument and system is designed for a dedicated application. With beginnings in borehole logging for the petro-chemical industry Magnetic Resonance sensor...

Many types of biosensors employ magnetic nanoparticles (diameter = 5-300 nm) or magnetic particles (diameter = 300-5,000 nm) which have been surface functionalized to recognize specific molecular targets. Here we cover three types of biosensors that employ different biosensing principles, magnetic materials, and instrumentation. The first type consists of magnetic relaxation switch assay-sensor...

The induction coil sensors (called also search coils, pickup coils or magnetic loop sensors) are described. The design methods of air coils and ferromagnetic core coils are compared and summarized. The frequency properties of the coil sensors are analyzed and various methods of output signal processing are presented. Special kinds of induction sensors, as Rogowski coil, gradiometer sensors, vib...

Interest in highly sensitive magnetic sensors has been great due to their wide applications ranging from data storage to geomagnetic exploration. To achieve better performance, magnetic sensors are usually fabricated with micrometer-sized or sub-micrometer-sized multilayer structures. The thickness of each layer can be as thin as a few angstroms. The magnetic properties of these small and thin ...

Multiferroic composites with ferromagnetic and ferroelectric phases have been studied in recent years for use as sensors of AC and DC magnetic fields. Their operation is based on magneto-electric (ME) coupling between the electric and magnetic subsystems and is mediated by mechanical strain. Such sensors for AC magnetic fields require a bias magnetic field to achieve pT-sensitivity. Novel magne...