A device for detection of magnetic permeability () or, alternatively, relative magnetic permeability (r) or, alternatively relative magnetic susceptibility (r-) of a sample is described. The device comprises a sample chamber having at least one opening for introduction of a sample or a sample container holding a sample and an electronic circuit. The device also comprises a coil surrounding said sample chamber, and also an electronic circuit adapted to measure the inductance of said coil. The sample chamber, coil and at least one component of the electronic circuit are placed in a temperature controlled zone. Said at least one component in said electronic circuit is/are selected from the group consisting of capacitors, sensors, precision voltage references, precision regulators, low pass and or high pass filters.

A volume susceptibility (s1) of a first dispersoid particle (s1) is obtained. A second dispersoid particle (s2) that is the first dispersoid particle (s1) to which an adsorbate is adsorbed is obtained. A volume susceptibility (s2) of the second dispersoid particle (s2) is obtained. An amount of a functional group of the first dispersoid particle (s1) is analyzed through obtaining an amount of the adsorbate included in the second dispersoid particle (s2) based on the volume susceptibilities (s1) and (s2) of the first and second dispersoid particles (s1) and (s2).

A volume susceptibility (s1) of a first dispersoid particle (s1) is obtained. A second dispersoid particle (s2) that is the first dispersoid particle (s1) to which an adsorbate is adsorbed is obtained. A volume susceptibility (s2) of the second dispersoid particle (s2) is obtained. An amount of a functional group of the first dispersoid particle (s1) is analyzed through obtaining an amount of the adsorbate included in the second dispersoid particle (s2) based on the volume susceptibilities (s1) and (s2) of the first and second dispersoid particles (s1) and (s2).

Disclosed herein are methods and systems that use magnetic complexes in wellbore monitoring. A well monitoring system may comprise magnetic complexes disposed in a subterranean formation, wherein the magnetic complexes each comprise a first magnetic portion, a second magnetic portion, and a spacer portion; and an electromagnetic interrogator, wherein the electromagnetic interrogator comprises an electromagnetic source and an electromagnetic detector.

A magnetic field generation device (100) includes a first magnet (1), a second magnet (2), and a position adjustment mechanism (5). The second magnet (2), together with the first magnet (1), generates a magnetic field. The position adjustment mechanism (5) adjusts a position of the first magnet (1). The magnetic field generation device (100) controls the value of the product of a magnetic flux density and a magnetic flux density gradient in the magnetic field through the adjustment of the position of the first magnet (1) by the position adjustment mechanism (5).

A magnetic field generation device (100) includes a first magnet (1), a second magnet (2), and a position adjustment mechanism (5). The second magnet (2), together with the first magnet (1), generates a magnetic field. The position adjustment mechanism (5) adjusts a position of the first magnet (1). The magnetic field generation device (100) controls the value of the product of a magnetic flux density and a magnetic flux density gradient in the magnetic field through the adjustment of the position of the first magnet (1) by the position adjustment mechanism (5).

A particle analyzing apparatus (10) includes a processor (42) and storage (41). The processor (42) acquires a volume magnetic susceptibility of an analyte particle (p). The storage (41) stores reference data (43). The reference data (43) indicates a volume magnetic susceptibility of a reference particle of the same type as a type of the analyte particle (p) for each of possible crystal forms of the analyte particle (p). The processor (42) determines a crystal form of the analyte particle (p) on the basis of the volume magnetic susceptibility of the analyte particle (p) and the reference data (43).

The invention provides a method for determining the state of charge (SOC) of an electrolyte, such as an electrolyte within a flow battery, by measuring the bulk magnetic susceptibility of the electrolyte. The method includes the step of measuring the magnetic susceptibility of an electrolyte in a measurement region and determining the state of charge of the electrolyte based on the magnetic susceptibility of the electrolyte.

The invention provides a method for determining the state of charge (SOC) of an electrolyte, such as an electrolyte within a flow battery, by measuring the bulk magnetic susceptibility of the electrolyte. The method includes the step of measuring the magnetic susceptibility of an electrolyte in a measurement region and determining the state of charge of the electrolyte based on the magnetic susceptibility of the electrolyte.

A magneto-mechanical sensor can be use for paramagnetic gas analysis, in which a test piece has a conductor loop is rotatably held by at least one suspension wire. In order to be able to produce the conductor loop, which is to be electrically connected to the at least one suspension wire, with little manual effort and use a small-sized, light-weight sensor, portions of the conductor loop are applied to the surface of the test piece using a metallization process.