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: 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: 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: 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: 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: 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: A method for manufacturing a high density piezoelectric thick film includes the steps of: mixing and dispersing piezoelectric material powder and a sol in a vehicle made of an organic binder and solvent, to fabricate a paste; printing the paste to a thickness of 5-100 micron on a substrate by a screen printing, to form a thick film; drying the thick film, and thermally treating the thick film.

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: 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 plate-type NO.sub.x gas sensor having a WO.sub.3 sensing film which are capable of preventing temperature variation of a sensing thin film depending on gas flow to decrease heat loss thereof, whereby extending the life span of batteries of a portable gas sensor. The plate-type NO.sub.x gas sensor includes a Pt thin film electrode formed on a front surface of an alumina substrate, a tungsten oxide thin film for sensing NO.sub.x gas deposited on the front surface of the substrate on which the Pt thin film electrode is formed, a heater formed on a back surface of the alumina substrate for holding a portion of the tungsten oxide thin film for sensing NO.sub.x gas within a predetermined temperature range, a conducting wire for connecting between the Pt thin film electrode and the heater and a sheet made of at least one material selected from a group composed of Al.sub.2 O.sub.

Abstract: A PZT ferroelectric thin film is sputter deposited on an electrode without microcracks while avoiding oxygen and Pb ion deficiencies at the electrode interface by initially forming a buffer layer containing a sufficient amount of a volatile Pb component and a sufficient amount of oxygen to easily absorb the energy of sputter particles. The PZT ferroelectric thin film can also be deposited by laser ablation.

Abstract: A rapid thermal processing method for a ceramic thin film which is capable of carrying out a uniform heating of a large sized wafer, and of achieving a rapid temperature elevation, and of enhancing a crystallinity of a deposited thin film, wherein a thin film-coated material is disposed on a support to rapidly heat the thin film by the application of microwaves, the temperature is measured with a temperature measuring unit, and the generation of the microwaves is halted at a required temperature.