Abstract: A capsule type micro-robot moving system moves on an organ's wall covered with mucilage at a high speed. The present invention provides a capsule type micro-robot moving system, which is structured such that a head is formed in a semi-spherical shape and the outer surface of the capsule is coated with an anti-adhesion coating agent for reducing friction against organs during the movement, particularly, is structured to move as long as a linear stroke corresponding to the distance between the driving part and the inner cylinder in the state that the limbs folded in and unfolded out of the capsule completely contact and stick to the walls of the organs, resulting in providing the reliability and moving more rapidly.

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: This new automatic bio-manipulation factory system for manipulating a single cell comprises: a bio-MEMS that transports, separates, and extracts a single cell for manipulation from a plurality of cells, controls the rotation-orientation of the extracted cell automatically, and enables the extracted cell to maintain a certain temperature; and a micro manipulation system that obtains vision information and manipulation information about the extracted single cell and the manipulation tool, provides such information to operator, manipulates the extracted single cell by transmitting the rotation-orientation feedback information and the cell manipulation order of the operator to the bio-MEMS, and manipulates the manipulation tool by transmitting the tool manipulation order of the operator to the manipulation tool. The conventional manual and individualized single cell manipulation can be automated and processed collectively by systematically combining the bio-MEMS with the micro manipulation system.

Abstract: The present invention relates to a smart pipette for bio-cell manipulation which can freely change orientation of a bio-cell subject to the manipulation by using mechanical friction and applying instantaneous impact when penetrating the subject bio-cell while receiving real-time feedback of force/torque information of the bio-cell.

Abstract: This new automatic bio-manipulation factory system for manipulating a single cell comprises: a bio-MEMS that transports, separates, and extracts a single cell for manipulation from a plurality of cells, controls the rotation-orientation of the extracted cell automatically, and enables the extracted cell to maintain a certain temperature; and a micro manipulation system that obtains vision information and manipulation information about the extracted single cell and the manipulation tool, provides such information to operator, manipulates the extracted single cell by transmitting the rotation-orientation feedback information and the cell manipulation order of the operator to the bio-MEMS, and manipulates the manipulation tool by transmitting the tool manipulation order of the operator to the manipulation tool. The conventional manual and individualized single cell manipulation can be automated and processed collectively by systematically combining the bio-MEMS with the micro manipulation system.

Abstract: The present invention discloses a dielectric ceramic composition having a formula represented by (1−x)Nd(Ga1−yAly)O3-xCaTiO3, wherein x refers a mole fraction of CaTiO3 to the composition and satisfies an expression of 0.5≦x≦0.8, and y refers a mole fraction of Al to Ga and satisfies an expression of 0≦y≦0.9. The present dielectric substance has a high dielectric constant and a high Q value and a resonant frequency temperature coefficient of near 0. Also, it can be sintered at a low temperature and thus replace the conventional dielectric materials used as a filter for parts of mobile communication or satellite communication appliances.

Abstract: The present invention discloses a method for preparing Ba(Zn1/3Ta2/3)O3 dielectric ceramic compositions. In accordance with the present invention, by adding a small amount of Al2O3, Ga2O3, ZrO2, or TiO2, which can generate metal ion having an atomic value of 3+ or 4+, the problems occurring during the sintering of BZT due to the volatilization of Zn can be solved. Also, the BZT dielectrics obtained from the present method have a Q value of 200,000, which is higher than the pure BZT, a dielectric constant of 28.5 or more and a resonant frequency temperature coefficient of near 0.

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 discloses a dielectric ceramic composition having a formula represented by (1−x)Nd(Ga1−yAly)O3−xCaTiO3, wherein x refers a mole fraction of CaTiO3 to the composition and satisfies an expression of 0.5≦x≦0.8, and y refers a mole fraction of Al to Ga and satisfies an expression of 0≦y≦0.9.

Abstract: The present invention discloses a method for preparing Ba(Zn⅓Ta⅔)O3 dielectric ceramic compositions.

Abstract: A vacuum generating apparatus for a vacuum cleaner is provided, in which an axial type coreless brushless direct-current (DC) motor is implemented in the form of a rotor-impeller integration structure. The vacuum generating apparatus includes an axial type brushless DC motor in which disc-shaped upper and lower rotors are symmetrically disposed facing the upper and lower portions of a disc-shaped stator at either end of a rotating shaft rotatably supported in the inner circumferential portion of the stator, upper and lower impellers integrally fixed in the upper and lower rotors, respectively, and upper and lower housings whose outer circumferential portions are combined with the outer circumferential portions of the respective disc-shaped stator such that air sucked via sucking inlets formed at the center of the housings is guided to a discharging outlet together with the stator. A single rotor structure can also be adopted.

Abstract: A two-phase brushless direct-current (BLDC) motor having a single Hall effect device. The BLDC motor includes a stator comprised of 2n coils grouping as first and second phase coils at a uniform interval, and a rotor which N-pole and S-pole magnets of the same number as that of the stator coils are alternately disposed, the 2n magnets forming n pairs, each pair of magnets are disposed at a uniform interval, wherein a distant ratio from the center of one N-pole magnet to the centers of the S-pole magnets adjacent the N-pole magnet is established into 1:1.4. Since 2n auxiliary magnets are disposed annularly on the rotor with the same length as each other corresponding to the N-pole and S-pole magnets, a single Hall effect device detects the magnetic pole by magnetic flux of the rotating auxiliary magnets and generates the rotating position signal of the rotor, so that a switching controller can activate the first and second phase coils alternately.

Abstract: Provided with a dielectric ceramic composition for microwaves having the formula represented by yMgTa.sub.2-x O.sub.6-5/2x +(1-y)ZnNb.sub.2 O.sub.6 +wC, wherein 0<x.ltoreq.0.8, 0.1.ltoreq.y.ltoreq.1, 0.ltoreq.w.ltoreq.2 wt %, and C is at least one selected from a group consisting of Sb.sub.2 O.sub.5, CuO, ZnO, NiO, MgO, SrCO.sub.3, BaCO.sub.3, ZrO.sub.2, WO.sub.3, and TiO.sub.2, the composition having a low permittivity of 20-30, a quality factor almost equal to that of Ba(Zn,Ta)O.sub.3 families, and a relatively excellent sintering characteristic, thus particularly suitable for dielectric resonators in a high frequency band above 10 GHz.

Abstract: A dielectric ceramic composition for microwave applications consists essentially of the compound having a formula B'B.sub.2 "O.sub.6, wherein B' is at least one metal selected from the group of Mg, Ca, Co, Mn,Ni and Zn, and wherein B" is one of Nb or Ta, and additionally includes at least one compound selected from the group of CuO, V.sub.2 O.sub.5, La.sub.2 O.sub.3, Sb.sub.2 O.sub.5, WO.sub.3, MnCO.sub.3, MgO, SrCO.sub.3, ZNO, and Bi.sub.2 O.sub.3 as an additive, wherein the amount of the additive is 0.05% to 2.0% by weight of the total weight of the composition.