Abstract: Provided is a protein detection system using a micro-cantilever and based on immune responses, wherein the micro-cantilever shows significantly improved sensitivity to allow detection of a trace amount of biomolecule. To the micro-cantilever, sandwich immunoassay is applied, and the sandwich immunoassay uses a polyclonal antibody or silica nanoparticles having a monoclonal antibody bound thereto, so that variations in the output signals of the cantilever are amplified and the detection sensitivity is significantly improved. The system enables detection of disease specific antigen at several femtomolar levels, and makes it possible to detect a trace amount of protein related to diseases, particularly to cancers, with ease.

Abstract: The present invention relates to an apparatus and a method for fabricating a microcapsule, more particularly to an apparatus and a method for fabricating a microcapsule, which enable to encapsulate uniform cell number in a microcapsule through cell distribution, improve cell viability in the microcapsule through fluid exchange, and ensure uniform microcapsule size. The apparatus for fabricating a microcapsule according to the present invention uses a plurality of microchannels which are spatially connected with one another and are designed such that fluid flows through them in a particular direction, and comprises a cell supply unit which supplies a fluid mixture of cells and a cell dropletizing material; and a droplet forming unit in which a dropletization inducing fluid supplied from one of the plurality of microchannels joins with the fluid mixture of the cells and the cell dropletizing material to form a droplet.

Abstract: The present invention relates to a biosensor specifically detecting a protein kinase A (PKA), and a diagnosis kit comprising the biosensor. In particular, the present invention relates to a biosensor for detecting a PKA comprising a cantilever, and a protein kinase inhibitor (PKI) immobilized on the surface of the cantilever; and a kit for diagnosing diseases caused by the increase of the activity of a protein kinase, comprising a sample, the biosensor, and a quantification manner.

Abstract: A portable device for data communication using a body as a conductor to transmit data to a receiver, the portable device includes a data receiving unit to receive data, a controller unit to control processing of data to be transmitted, a current limiting circuit to limit a current of a signal corresponding to the data to be transmitted to a predetermined value, and transmitting electrodes connected to the current limiting circuit and to contact the body to transmit the signal having the current of predetermined value to the receiver.

Abstract: The present invention provides a method and apparatus for receiving data in a human body communication system. The receiving apparatus, which comprises plural receiving electrodes, selects the optimum pair of receiving electrodes when receiving data, so that it can improve quality of received information and obtain position information of a sensor in the human body.

Abstract: Disclosed are system and method for measuring a bio-element capable of accurately detecting whether a bio-element such as protein, gene and the like is present in an atmosphere or vapor phase having controlled temperature and humidity thereof and measuring a content of the bio-element. According to an embodiment of the invention, the method comprises steps of preparing a cantilever sensor having a plurality of cantilevers; measuring a basis resonant frequency for the plurality of cantilevers; reacting the cantilevers with a sample including a bio-element; measuring resonant frequencies of the cantilevers after the reaction, in a closed system that is isolated from an exterior environment and temperature and humidity thereof are controlled to a specific state; and calculating variations of the resonant frequencies of the cantilevers before and after the reaction to carry out a quantitative analysis of the bio-element included in the sample.

Abstract: A microchannel chip and a dilution method using the same capable of continuously diluting the diverse concentrations of solution by one time fluid injection using the microfluid technology are provided. The microchannels are formed in a plastic chip using the microfluid technology, and a width, a sectional area, or a length of the microchannel is regulated so that the flow rate of a diluted solution (e.g., buffer solution) and a sample (e.g., chemicals or medicament) is controlled. The diluted solution and the specimen are mixed in the mixing channel according to the flow rate, thereby diluting the sample. Such a diluted solution is mixed again with a diluted solution, carrying out the dilution. With the repeated dilution processes, continuously diluted solution is obtained.

Abstract: Disclosed relates to a method and an apparatus for measuring fluorescence polarization FP in a lab-on-a-chip and, more concretely, to a method and an apparatus that measure quantitatively interactions between biomolecules and fluorescently labeled biomaterials and enzyme activities using the measurement of fluorescence polarization FP. The method and the apparatus of the invention provide rapid assays with minute amounts of samples using an automated device compared to conventional methods. Accordingly, the method and the apparatus of the invention can be usefully applied to the measurement of interactions between biomolecules and to the protease assays using a protein substrate.

Abstract: The present invention relates to a biosensor specifically detecting a protein kinase A (PKA), and a diagnosis kit comprising the biosensor. In particular, the present invention relates to a biosensor for detecting a PKA comprising a cantilever, and a protein kinase inhibitor (PKI) immobilized on the surface of the cantilever; and a kit for diagnosing diseases caused by the increase of the activity of a protein kinase, comprising a sample, the biosensor, and a quantification manner.

Abstract: A method for communication between inside and outside of a transmission medium using the transmission medium as a communication line, includes the steps of: receiving an electric signal having information related to a transmission medium from a plurality of sensors inside the transmission medium; conducting the electric signal to the transmission medium; and sensing the electric signal flowing to the outside of the transmission medium. Because a modulating unit is not necessary, a power consumption is minimized. In addition, since an electric signal is directly conducted to a medium, it is not necessary to use an antenna, and thus, degradation of a reception rate according to a directional property of the antenna can be prevented. Moreover, since the electric signal is directly generated in the medium and the medium is directly used as an electric conductor, the overall size of a transmitter is reduced.

Abstract: The present invention provides method and system for data communication in the human body and a sensor therefor. The method and system transmit information through the human body to a receiver located outside the human body using low current and voltage polarity, so that they cause no damage to the human body and achieve low power consumption and better receiving sensitivity. In addition, the sensor contains a CMOS image sensor on which all circuits are integrated without radio transmitter and antenna, so that it achieves a low-priced and small-sized capsule type endoscope.

Abstract: The present invention provides a method and apparatus for receiving data in a human body communication system. The receiving apparatus, which comprises plural receiving electrodes, selects the optimum pair of receiving electrodes when receiving data, so that it can improve quality of received information and obtain position information of a sensor in the human body.

Abstract: In a cantilever sensor and a fabrication thereof, by forming piezoelectric films on the same surface, it is possible to sense various information by an electric measuring method.

Abstract: An endoscope system with a hollow cylinder and bellows moving mechanism is provided. The system includes a cylinder having a head unit mounted by a camera devices, a front fixing unit connected to the head unit which is installed to an outer circumference of the cylinder and fixed to an inner wall of an organ, a rear fixing unit slidably installed at the outer circumference of the cylinder and fixed to the inner wall of the organ, and a moving unit between the front fixing unit and the rear fixing unit for moving the head unit in the organ by an extension and contraction when the front fixing unit or the rear fixing unit fixes the head unit to the inner wall of the organ. The moving unit includes a double bellows and forms a hermetic space with the outer circumference surface of the cylinder.

Abstract: A micro capsule robot comprises a body unit; a body movement control unit, which is installed on an outer circumferential surface of the body unit, including a linear driving device, and wings which are unfolded from the outer circumferential surface of the body unit by operation of the linear driving device for delaying or stopping the movement of the body unit; and a controlling unit installed in the body unit for controlling the body movement delay unit.

Abstract: A high-sensitive micro cantilever sensor and a method for fabricating the same which is able to reduce size of a system greatly using a functional thin film has a structure in which an upper substrate comprising one or two piezoelectric cells including a cantilever, a piezoelectric layer formed on lower or upper surface of the cantilever, and electrodes formed on upper and lower surfaces of the piezoelectric layer is attached to a lower substrate including a cavity of an even depth by contacting the lower surface of the piezoelectric cell on the upper substrate with the cavity surface of the lower substrate.

Abstract: A high density ceramic thick film is fabricated by providing vehicle comprising an organic binder and solvent, dispersing ceramic powders into the vehicle to be paste, forming the paste to thick film by screen printing, removing the organic binder from the film, applying sol or sol-like solution to the surface of the film so that the sol or sol-like solution can infiltrate into the film, removing remaining sol or sol-like solution from the surface of the film, drying and preheating the film, and sintering the film.

Abstract: A micro capsule robot comprises a body unit; a body movement control unit, which is installed on an outer circumferential surface of the body unit, including a linear driving device, and wings which are unfolded from the outer circumferential surface of the body unit by operation of the linear driving device for delaying or stopping the movement of the body unit; and a controlling unit installed in the body unit for controlling the body movement delay unit.

Abstract: Disclosed is an endoscope system having a body comprising: a cylinder having a head unit mounted by a camera device at one side thereof and connected to a tube which is connected to an external device out of a human body at the other side thereof; a front fixing unit connected to the head unit, installed to an outer circumference of the cylinder, and thereby fixed to an inner wall of an organ; a rear fixing unit slidably installed at the outer circumference of the cylinder and fixed to the inner wall of the organ; and a moving unit connectedly installed between the front fixing unit and the rear fixing unit for moving the head unit in the organ by an extension and contraction when the front fixing unit or the rear fixing unit fixes the head unit to the inner wall of the organ.

Abstract: In a cantilever sensor and a fabrication thereof, by forming piezoelectric films on the same surface, it is possible to sense various information by an electric measuring method.