Abstract: The present invention relates to a magnetic sensor based on a Wheatstone bridge and a manufacturing method thereof. The magnetic sensor according to an embodiment includes a magnetic field sensing unit that is provided with a plurality of magneto resistors forming a resistance bridge, a magneto resistor monitoring unit that monitors resistance values of the plurality of magneto resistors, and an offset adjusting unit that adjusts a resistance value of a thin film variable resistor connected to at least one terminal among a plurality of current terminals provided in the resistance bridge based on the monitoring result of the resistance values.

Abstract: Provided is a magnetic sensor for detecting a magnetic field. The magnetic sensor includes a magnetic layer of a closed loop shape; a pair of current terminals which face each other contacting with the closed loop and through which current is input/output; and a pair of voltage terminals which face each other contacting with the closed loop and from which output voltage is detected. Both an anisotropic magnetoresistance effect (AME) and a planar Hall effect (PHE) contribute to the output voltage and a hysteresis of the output voltage is eliminated by exchange coupling of a ferromagnetic layer by a ferromagnetic-antiferromagnetic layer structure and a ferromagnetic-metal-antiferromagnetic layer structure. Accordingly, it is possible to minimize a hysteresis due to a demagnetization factor of the closed loop, stabilize the output voltage of the magnetic sensor and enhance sensitivity.

Abstract: A device for transporting, trapping and escaping a single biomaterial using a magnetic structure, and a method of transporting, trapping and escaping of the single biomaterial using the same are provided, and a method is provided for controlling movement and direction of the single biomaterial including soft magnetic micro structure and magnetic structure in a linear, square storage, apartment type, radial soft magnetic micro structure. Accordingly, the device for transporting, trapping and escaping a single biomaterial and the method for transporting, trapping and escaping single biomaterial using the same can control movement on the lap-on-a-chip with increased precision and ease, by using magnetic force, and thus can be advantageously used in the field of magneto-resistive sensor, or categorization of single cells or biomolecules.

Abstract: A micromagnetometry system for detecting the presence of very small quantities of magnetic particles comprises a first magnetic hybrid AMR/PHR multiring sensor using a Wheastone bridge electrical configuration, a first current source, a first voltage measurement device, a set of at least one magnetic particles deposited on the first magnetic sensor and a processing unit for detecting from a set of different measured differential voltages a magnetic flux shift representative of the presence of a least one deposited magnetic particle. The micromagnetometry system comprises means for creating a magnetic excitation field HAC to make produce by each motionless magnetic particle a stray magnetic field oscillating along the time at a constant frequency ? ranging from 10 Hz to 3 KHz.

Abstract: The present invention relates to a microfluidic chip for measuring the magnetic susceptibility of a superparamagnetic nanoparticle droplet and a method for measuring magnetic susceptibility using the same. According to the invention, the magnetic susceptibility of a superparamagnetic nanoparticle can be continuously and accurately measured in a flowing fluid using a microfluidic chip including microfluidic channels.

Abstract: A micromagnetometry system for detecting the presence of very small quantities of magnetic particles comprises a first magnetic hybrid AMR/PHR multi-ring sensor using a Wheastone bridge electrical configuration, a first current source, a first voltage measurement device, a set of at least one magnetic particles deposited on the first magnetic sensor and a processing unit for detecting from a set of different measured differential voltages a magnetic flux shift representative of the presence of a least one deposited magnetic particle. The micromagnetometry system comprises means for creating a magnetic excitation field HAC to make produce by each motionless magnetic particle a stray magnetic field oscillating along the time at a constant frequency ? ranging from 10 Hz to 3 KHz.

Abstract: Provided are a barcode nano-wire for decoding a hard magnetic segment by using highly sensitive magnetic sensors and a bio-sensing system using the barcode nano-wire. Integration of hard magnetic and non-magnetic segments produces the barcode nanowire and magnetic segments are detected using highly sensitive magnetoresistance sensors. The non-magnetic segment uses a non-magnetic material and a specific biomolecule for bioanalysis is immobilized at a specific portion of the barcode nano-wire. The hard magnetic material has an advantage of higher coercivity and high remanence magnetization, which is considered as an important parameter in selecting the material. The hard magnetic segments produce distinguishable strong stray fields for individually detecting segments using conventional magnetic sensors for multiplexed bioanalysis.

Abstract: A device for transporting, trapping and escaping a single biomaterial using a magnetic structure, and a method of transporting, trapping and escaping of the single biomaterial using the same are provided, and a method is provided for controlling movement and direction of the single biomaterial including soft magnetic micro structure and magnetic structure in a linear, square storage, apartment type, radial soft magnetic micro structure. Accordingly, the device for transporting, trapping and escaping a single biomaterial and the method for transporting, trapping and escaping single biomaterial using the same can control movement on the lap-on-a-chip with increased precision and ease, by using magnetic force, and thus can be advantageously used in the field of magneto-resistive sensor, or categorization of single cells or biomolecules.

Abstract: The present invention relates to a microfluidic chip for measuring the magnetic susceptibility of a superparamagnetic nanoparticle droplet and a method for measuring magnetic susceptibility using the same. According to the invention, the magnetic susceptibility of a superparamagnetic nanoparticle can be continuously and accurately measured in a flowing fluid using a microfluidic chip including microfluidic channels.

Abstract: Provided is a stray field collector (SFC) pad and a bio-molecule sensing module or a biochip using the same, and more particularly, a SFC pad, in which probe or detection molecules are attached to a plurality of magnetic labels (magnetic particles or beads) and they are bonded to complementary molecules to enhance a stray field sensor signal of the magnetic labels remaining in the vicinity of the sensor, and a bio-molecule sensing module and a biochip using the same. The provided is related to qualitative as well as quantitative detection of magnetic labels, and the SFC pad which can increase an effective surface area sensitive to the magnetic labels by probe-detection molecular bond in a magnetic biosensor and collect the resultant stray field can enhance sensitivity, accuracy and resolution of the magnetic biosensor.

Abstract: Provided are a barcode nano-wire for decoding a hard magnetic segment by using highly sensitive magnetic sensors and a bio-sensing system using the barcode nano-wire. Integration of hard magnetic and non-magnetic segments produces the barcode nanowire and magnetic segments are detected using highly sensitive magnetoresistance sensors. The non-magnetic segment uses a non-magnetic material and a specific biomolecule for bioanalysis is immobilized at a specific portion of the barcode nano-wire. The hard magnetic material has an advantage of higher coercivity and high remanence magnetization, which is considered as an important parameter in selecting the material. The hard magnetic segments produce distinguishable strong stray fields for individually detecting segments using conventional magnetic sensors for multiplexed bioanalysis.

Abstract: Disclosed is a magnetic force generator for controlling an external magnetic field to magnetize a micro magnetic device and a microbead; the micro magnetic device for generating an internal magnetic field when magnetized by the external magnetic field, and controlling movement of the microbead according to a direction of magnetization; and the microbead which immobilizes a biomolecule on a surface thereof and of which movement is controlled by the internal magnetic field generated as the micro magnetic device is magnetized.

Abstract: Provided is a magnetic sensor for detecting a magnetic field. The magnetic sensor includes a magnetic layer of a closed loop shape; a pair of current terminals which face each other contacting with the closed loop and through which current is input/output; and a pair of voltage terminals which face each other contacting with the closed loop and from which output voltage is detected. Both an anisotropic magnetoresistance effect (AME) and a planar Hall effect (PHE) contribute to the output voltage and a hysteresis of the output voltage is eliminated by exchange coupling of a ferromagnetic layer by a ferromagnetic-antiferromagnetic layer structure and a ferromagnetic-metal-antiferromagnetic layer structure. Accordingly, it is possible to minimize a hysteresis due to a demagnetization factor of the closed loop, stabilize the output voltage of the magnetic sensor and enhance sensitivity.

Abstract: A routing method in consideration of the power and transmission delay in a wireless ad hoc network and a terminal device adopting the same are provided, which can reduce the power consumption and packet delay by considering both the power consumption and packet delay. The terminal device includes a judgment unit that determines whether a first accumulative hop count included in a first route request (RREQ) packet exceeds a predetermined route decision value for limiting a hop count from a source node to a destination node, and a control unit that determines a route to the source node, based on information included in the first RREQ packet, if the judgment unit determines that the first accumulative hop count does not exceed the route decision value.

Abstract: Provided is a stray field collector (SFC) pad and a bio-molecule sensing module or a biochip using the same, and more particularly, a SFC pad, in which probe or detection molecules are attached to a plurality of magnetic labels (magnetic particles or beads) and they are bonded to complementary molecules to enhance a stray field sensor signal of the magnetic labels remaining in the vicinity of the sensor, and a bio-molecule sensing module and a biochip using the same. The provided is related to qualitative as well as quantitative detection of magnetic labels, and the SFC pad which can increase an effective surface area sensitive to the magnetic labels by probe-detection molecular bond in a magnetic biosensor and collect the resultant stray field can enhance sensitivity, accuracy and resolution of the magnetic biosensor.

Abstract: A routing method in consideration of the power and transmission delay in a wireless ad hoc network and a terminal device adopting the same are provided, which can reduce the power consumption and packet delay by considering both the power consumption and packet delay. The terminal device includes a judgment unit that determines whether a first accumulative hop count included in a first route request (RREQ) packet exceeds a predetermined route decision value for limiting a hop count from a source node to a destination node, and a control unit that determines a route to the source node, based on information included in the first RREQ packet, if the judgment unit determines that the first accumulative hop count does not exceed the route decision value.