Abstract: In a piezoelectric speaker, an acoustic diaphragm is thicker than a piezoelectric thin film and is formed of a more flexible and higher elasticity material than the piezoelectric thin film, thereby greatly improving output sound pressure in a low frequency band and reducing sound distortion. Further, the piezoelectric thin film is attached to the acoustic diaphragm in an inclined structure in which the piezoelectric thin film is horizontally turned from the acoustic diaphragm, thereby preventing a standing wave from being created by structural symmetry and minimizing sound distortion.

Abstract: A corner protection pad of a washing machine to stably protect a washing machine against external force applied during transportation and loading and a washing machine packing structure using the same. The corner protection pad includes a cushion portion configured to correspond to a corner of the washing machine to cover the corner of the washing machine, and a recess indented in the cushion portion to have a gradually decreasing cross sectional area.

Abstract: The drum includes a drum body provided with at least one opening, and a balance ring passing through the at least one opening and detachably connected to the drum body.

Abstract: A method of fabricating an electronic device using nanowires, minimizing the number of E-beam processing steps and thus improving a yield, includes the steps of: forming electrodes on a substrate; depositing a plurality of nanowires on the substrate including the electrodes; capturing an image of the substrate including the nanowires and the electrodes; drawing virtual connection lines for connecting the nanowires with the electrodes on the image using an electrode pattern simulated through a computer program, after capturing the image; coating an E-beam photoresist on the substrate; removing the photoresist from regions corresponding to the virtual connection lines and the electrode pattern using E-beam lithography; depositing a metal layer on the substrate after removing the photoresist from the regions of the virtual connection lines; and removing remaining photoresist from the substrate using a lift-off process.

Abstract: A bush member for a rotating shaft of a washing machine wherein a manufacturing process of the bush member is simplified and the bush member has a small thickness, a washing machine having the bush member, and a manufacturing method of the bush member and the washing machine. The bush member is formed by pressing a raw material without sintering. The bush member has a thickness of 0.3 mm to 0.7 mm. The bush member has a taper inclined to achieve secure coupling between the bush member and the rotating shaft and a curled part formed at the lower end thereof.

Abstract: Provided is a method of fabricating a nano-wire array, including the steps of: depositing a nano-wire solution, which contains nano-wires, on a substrate; forming a first etch region in a stripe shape on the substrate and then patterning the nano-wires; forming drain and source electrode lines parallel to each other with the patterned nano-wires interposed therebetween; forming a plurality of drain electrodes which have one end connected to the drain electrode line and contact at least one of the nano-wires, and forming a plurality of source electrodes, which have one end connected to the source electrode line and contact the nano-wires that contact the drain electrodes; forming a second etch region between pairs of the drain and source electrodes so as to prevent electrical contacts between the pairs of the drain and source electrodes; forming an insulating layer on the substrate; and forming a gate electrode between the drain and source electrodes contacting the nano-wires on the insulating layer.

Abstract: Provided are an acoustic multi-pole array and methods of packaging and controlling the same. The methods include packaging first and second sound devices constituting an acoustic multi-pole array to have different sound characteristics or the same sound characteristic, arranging the first and second sound devices in tandem, and then respectively inputting sound sources having the same magnitude and different phases to the first and second sound devices to improve forward directivity and reduce a backward radiation characteristic.

Abstract: A pipe connecting structure including a male flange block combined with a first pipe and a female flange block combined with a second pipe, which is fastened to the male flange block by a fastener, where a protrusion having a hole that communicates with the first pipe is formed through the male flange block, and an insert portion into which the protrusion is inserted is formed through the female flange block, and a sealing member to closely contact with the end face of the protrusion is seated on the bottom inside the insert portion, and the sealing member includes an inner sealing part of soft metal and an outer sealing part of rubber tightly fitted around the outer circumference of the inner sealing part.

Abstract: Provided is a micro heater, which includes an elastic thin film formed by sequentially depositing a first silicon oxide layer, a silicon nitride layer and a second silicon oxide layer, a heating part, a heat spreading structure and a heating part electrode, which are patterned on the elastic thin film, and an insulating layer formed on the heating part, the heat spreading structure and the heating part electrode. Here, the heat spreading structure is perpendicularly connected to the heating part at a connection portion.

Abstract: A drum type washing machine capable of preventing/reducing damage to a damper fixing unit provided on a bottom plate for securing a damper at a fixed position by a reinforced rigidity of the damper fixing unit. The drum type washing machine includes a water tub installed in a body, at least one damper to support the water tub, and a damper fixing unit provided on the bottom plate of the body to secure the damper at a fixed position. The damper fixing unit is formed via cutting of the bottom plate and has a reinforced rigidity by a reinforcing portion formed around each cut portion of the bottom plate.

Abstract: Provided is an optical microscope system for detecting nanowires to allow for use of an existing optical microscope in fabricating an electronic device having the nanowires and including: a light source for emitting light to provide the light to a nanowire sample; a rotational polarizer provided on a path of the light emitted from the light source for polarizing the light; an optical microscope for detecting a nanowire image using light that is polarized by the rotational polarizer and incident on the nanowire sample; a CCD camera provided in a region of the optical microscope for photographing and storing the nanowire image detected by the optical microscope; and a data processor for performing Fast Fourier Transform (FFT) on the nanowire image stored in the CCD camera. Intensity of reflected light varies, due to optical anisotropy of the nanowires, along a polarizing orientation of light incident on the nanowires.

Abstract: Provided are a hetero-junction bipolar transistor (HBT) that can increase data processing speed and a method of manufacturing the hetero-junction bipolar transistor.

Abstract: Provided is a dielectric waveguide filter. The filter includes: a multi-layered structure of dielectric substrates having first and second ground planes at its top and bottom; first, second, and third waveguide resonators disposed at multiple layers within the multi-layered structure; converters for signal transition between input/output ports and the first and third waveguide resonators; first vias for forming the first, second, and third waveguide resonators; and second vias disposed at a boundary surface of the first waveguide resonator and the third waveguide resonator.

Abstract: Provided is an optical microscope system for detecting nanowires that is designed with a rotational polarizer and Fast Fourier Transform (FFT) to allow for use of an existing optical microscope in fabricating an electronic device having the nanowires. The optical microscope system includes: a light source for emitting light to provide the light to a nanowire sample; a rotational polarizer provided on a path of the light emitted from the light source for polarizing the light; an optical microscope for detecting a nanowire image using light that is polarized by the rotational polarizer and incident on the nanowire sample; a CCD camera provided in a region of the optical microscope for photographing and storing the nanowire image detected by the optical microscope; and a data processor for performing Fast Fourier Transform (FFT) on the nanowire image stored in the CCD camera.

Abstract: Provided are an apparatus for collecting environmental data and a method of monitoring an environment in real time. The apparatus for collecting environmental data includes a receiver for receiving an environmental data collection command from outside, a headset controller for interpreting the environmental data collection command received from the receiver, and distinguishing an audio signal received from outside from the environmental data collection command, the environment sensor unit for collecting environmental data according to the environmental data collection command interpreted from the headset controller, and a transmitter for transmitting the environmental data collected by the environment sensor unit.

Abstract: Provided is a broadband microstrip-waveguide transition apparatus operating in a millimeter waveband. The millimeter-wave band broadband microstrip-waveguide transition apparatus includes a slot for transferring an electromagnetic signal propagating along a microstrip line, a main patch positioned between the slot and a waveguide and resonating from the signal transferred from the slot, and a parasitic patch positioned between the main patch and the waveguide and resonating together with the main patch. According to the millimeter-wave band broadband microstrip-waveguide transition apparatus, it is possible to transfer a signal from the microstrip line to the waveguide, and to increase a resonance bandwidth to a broadband level.

Abstract: A cylindrical rotating tub body and a drum-type washing machine having the same, in which the rotating tub body is formed by rolling a plate such that both ends of the plate are connected to each other. The washing machine includes a cylindrical rotating tub body and a plurality of lifters, which are spaced apart from each other on an inner peripheral surface of the rotating tub body. The rotating tub body includes lifter installation sections on which a plurality of lifters are installed, concave-convex sections having a plurality of concave-convex parts and being installed between the lifter installation sections, and reinforcement sections to reinforce the strength of the lifter installation sections. The lifter installation sections having a strength lower than that of the concave-convex sections are reinforced due to the reinforcement sections, so that the lifter installation sections are prevented from being extremely being deformed during the rolling process.

Abstract: Provided is a method of fabricating a nano-wire array, including the steps of: depositing a nano-wire solution, which contains nano-wires, on a substrate; forming a first etch region in a stripe shape on the substrate and then patterning the nano-wires; forming drain and source electrode lines parallel to each other with the patterned nano-wires interposed therebetween; forming a plurality of drain electrodes which have one end connected to the drain electrode line and contact at least one of the nano-wires, and forming a plurality of source electrodes, which have one end connected to the source electrode line and contact the nano-wires that contact the drain electrodes; forming a second etch region between pairs of the drain and source electrodes so as to prevent electrical contacts between the pairs of the drain and source electrodes; forming an insulating layer on the substrate; and forming a gate electrode between the drain and source electrodes contacting the nano-wires on the insulating layer.

Abstract: Provided is a hetero-junction membrane including: a first layer comprising first nanoparticles of a first conductive type; and a second layer comprising second nanoparticles of a second conductive type, wherein the first layer and the second layer are joined to each other. The hetero-junction membrane has advantages in that actuating efficiency is much higher, the direction of actuating can be predicted and the manufacturing processes are simple compared to conventional bucky paper formed of a single layer.

Abstract: A method of fabricating an electronic device using nanowires, minimizing the number of E-beam processing steps and thus improving a yield, includes the steps of: forming electrodes on a substrate; depositing a plurality of nanowires on the substrate including the electrodes; capturing an image of the substrate including the nanowires and the electrodes; drawing virtual connection lines for connecting the nanowires with the electrodes on the image using an electrode pattern simulated through a computer program, after capturing the image; coating an E-beam photoresist on the substrate; removing the photoresist from regions corresponding to the virtual connection lines and the electrode pattern using E-beam lithography; depositing a metal layer on the substrate after removing the photoresist from the regions of the virtual connection lines; and removing remaining photoresist from the substrate using a lift-off process.