The present application relates to a field of sensing and diagnostics, in general, and to a method for automatic on-site measurements of toxins, pathogens, heavy metals, explosives and any other analytes of interest.

Methods and apparatuses for sensing biological functions are disclosed. Sensors can be implanted in an organ, such as the brain, and a magnetic field gradient applied to the biological tissue. The field causes the sensors to have different resonant frequencies allowing their spatial localization. The sensors can harvest power from the external coils to be able to retransmit data.

A biomolecule magnetic sensor configured to sense magnetic beads attached with biomolecules includes an adsorption pad, a magnetic field line generator and at least one magnetic sensor. The adsorption pad is configured to adsorb the magnetic beads. The magnetic field line generator is configured to generate a plurality of first magnetic field lines, and at least one of the first magnetic field lines passes through the magnetic beads along a first direction to induce a plurality of second magnetic field lines, wherein the magnetic field line generator is disposed between the adsorption pad and the magnetic sensor in the first direction. The magnetic sensor is configured to sense a magnetic field component of at least one of the second magnetic field lines in a second direction. A second shift is provided between the magnetic sensor and the adsorption pad in the second direction.

The present disclosure is directed towards characterizing liquids through the use of magnetic discs that rotate in response to dynamic magnetic fields. In some embodiments, a light beam is transmitted into the liquid while the magnetic discs rotate, and one or more parameters a light beam signal associated with the transmitted light beam are identified. Various characteristics of the liquid may be detected based on the one or more parameters of the light beam signal.

A measuring method and apparatus in which a measurable object (23) is irradiated with acoustic waves to measure a change in property value of charged particles in the object from electromagnetic waves induced thereby. A part (2) of the measurable object irradiated with an acoustic focused beam (1) is in a charge distribution state in which positive charged particles (3) are greater in number in the part (2) where electromagnetic waves induced by positive charged particles (3) are not canceled by those induced by negative charged particles (4) and where net electromagnetic waves (6) are induced. Since a change in concentration of positive charged particles (3) and/or negative charged particles (4) changes the intensity of electromagnetic waves (6), it is possible to know such a change in concentration of the charged particles from a change in intensity of electromagnetic waves (6).

A measuring method and apparatus in which a measurable object (23) is irradiated with acoustic waves to measure a change in property value of charged particles in the object from electromagnetic waves induced thereby. A part (2) of the measurable object irradiated with an acoustic focused beam (1) is in a charge distribution state in which positive charged particles (3) are greater in number in the part (2) where electromagnetic waves induced by positive charged particles (3) are not canceled by those induced by negative charged particles (4) and where net electromagnetic waves (6) are induced. Since a change in concentration of positive charged particles (3) and/or negative charged particles (4) changes the intensity of electromagnetic waves (6), it is possible to know such a change in concentration of the charged particles from a change in intensity of electromagnetic waves (6).

A method of detecting a particle comprises magnetizing a particle using an AC magnetic field; generating an AC voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a DC magnetic field on the generated AC voltage in the sensing device; and measuring an AC Hall voltage at the sensing device.

A method of detecting a particle comprises magnetizing a particle using an AC magnetic field; generating an AC voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a DC magnetic field on the generated AC voltage in the sensing device; and measuring an AC Hall voltage at the sensing device.

A multi-channel high performance embedded system is provided, which is capable of high throughput biological analysis. A configurable acquisition and processing architecture combines dedicated co-processors to perform signal filtering and other computational demanding tasks, with a central processor controlling the whole system. The mapping of the architecture into an architecture, such as the Zynq SoC, demonstrates the ability of the biosensing platform to support a significant number of sensors, while ensuring a high sampling frequency. Furthermore, the Zynq reconfiguration abilities provide a mechanism to adapt the processing and maximize the biological sensitivity.

A portable magnetic resonance system includes a permanent magnet, a nuclear magnetic resonance probe, and control electronics. The control electronics are configured to transmit to the probe a magnetic resonance excitation signal having an excitation frequency f, receive from the probe a magnetic resonance measurement signal, detect in the magnetic resonance measurement signal a magnetic resonance frequency f0, and automatically adjust the excitation frequency f until the difference between the excitation frequency and the magnetic resonance frequency is approximately equal to a target offset.