Abstract: A microlens is provided with opposite sides thereof each having an aspheric-surface shape. The microlens is configured such that a lens layer having an aspheric-surface shape is provided on each opposite side of the microlens, an optical communication module may be miniaturized and integrated as a working distance (WD) is minimized to 0.160±0.05 mm, and collimating performance is excellent as a value obtained by calculating a paraxial radius (R1) of a first lens layer over a paraxial radius (R2) of a second lens layer is 1.8 to 3.5.

Abstract: The present invention provides an aluminum-iron-plated steel sheet, having excellent mold wear resistance, for hot press forming, and a manufacturing method thereof.

Abstract: A safety cutter for jam prevention for preventing an object being cut from being jammed when the direction of a disc-shaped rotary cutting member is switched especially in a diagonal or curved line, as well as cutting the object while the disc-shaped rotary cutting member is traversing and rotating about a center of the object being cut by means of simple pushing force without needing scissoring. The safety cutter includes a cutter body, disc-shaped rotary cutting members, and fastening members. In the cutter body, an open slit is formed on the front of the cutter body, coupling holes are respectively formed on the top and bottom of the open slit, and a grip part is formed on the rear of the cutter body.

Abstract: A heat storage textile. In one embodiment the textile is prepared by applying a coating containing carbon nanotubes to a side of a textile. The coating solution comprises, by weight, at least 0.1% carbon nanotubes, 0.01% dispersant, 9.89% resin binder, and 10 solvent. The carbon nanotube surface may be modified to improve the adhesive properties. The carbon nanotubes can be single wall nanotubes, multi-wall carbon nanotubes such as a double wall nanotube (DWNT), or thin multi-wall nanotubes. The coating may cure while transferring the coated heat storage textile with a constant velocity at a room temperature or in a heated chamber.

Abstract: Provided is a carbon nanotube (CNT) transparent conductive layer having a loop pattern in which a plurality of loops are at least partially connected to one another, and a fabrication method thereof. The loops in the pattern are generated by a spray-coating method and partially connected with one anther, and thus improving transparency and conductivity of the CNT transparent conductive layer. In Addition, the CNT transparent conductive layer has conductivity and sheet resistance highly suitable for a transparent electrode.

Abstract: Provided is a light-emitting display and a method of fabricating the same. The light-emitting display includes a base substrate, and at least one unit light-emitting layer disposed on an upper surface of the base substrate. Here, the unit light-emitting layer includes an electrode pattern layer having a plurality of electrode patterns formed in a specific pattern, at least one light-emitting device connected with the electrode patterns of the electrode pattern layer and selectively emitting light, and an electrode protection layer disposed to cover the electrode pattern layer.

Abstract: A transparent signboard and a method for fabricating the same are provided. The transparent signboard includes: a transparent substrate; an electrode layer made of polymer or carbon nanotube and comprising a plurality of conducting parts separated from each other with respect to a predetermined pattern region interposed therebetween, and a non-conducting part formed on the predetermined pattern region and integrally formed with the conducting parts; and a light-emitting device configured to connect the separated conducting parts to each other.

Abstract: Provided is a carbon nanotube (CNT) transparent conductive layer having a loop pattern in which a plurality of loops are at least partially connected to one another, and a fabrication method thereof. The loops in the pattern are generated by a spray-coating method and partially connected with one anther, and thus improving transparency and conductivity of the CNT transparent conductive layer. In Addition, the CNT transparent conductive layer has conductivity and sheet resistance highly suitable for a transparent electrode.

Abstract: A film speaker is provided. The film speaker includes: a piezoelectric film oscillating by receiving a voltage corresponding to a sound signal from a sound signal supply unit; a plurality of carbon nanotube films formed on both sides of the piezoelectric film; and a plurality of electrodes connected to the plurality of carbon nanotube films, receiving the voltage corresponding to the sound signal from the sound signal supply unit, and applying the voltage to the plurality of carbon nanotube films.

Abstract: Provided are a carbon nanotube dispersing agent, a carbon nanotube composite, a carbon nanotube film, and a method for manufacturing the carbon nanotube film. The carbon nanotube dispersing agent has at least one chromophore including at least one aromatic carbon ring, and has a plane structure.

Abstract: A conductive composite material is provided, including: a base layer; a conductive fiber thin-film made of conductive fiber and formed on the base layer; and a mixture layer in which part of the conductive fiber is inserted into part of the base layer.

Abstract: An alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a natural vibration frequency more than 2-5 Hz. First and second same-number set of subjects having similar weights alternately apply exciting forces to a wall on a top of the structure. An electronic beat-sound generator is adjusted to a two-beat mode to generate two alternating beat sounds repeatedly so that the first and second sets can apply vibration exciting forces repeatedly at a frequency of half of the natural vibration frequency of the structure obtained by micro-tremor measurement, while alternately synchronizing their actions to the two alternating beat sounds, respectively. The vibration exciting action is stopped after the structure is brought to a sufficient resonance state, thereby obtaining a free vibration waveform.

Abstract: Disclosed is an alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a natural vibration frequency more than 2.5 Hz. First and second same-number sets of subjects having similar weights alternately apply exciting forces to a wall on a top of the structure. An electronic beat-sound generator is adjusted to a two-beat mode to generate two alternating beat sounds repeatedly so that the first and second sets can apply vibration exciting forces repeatedly at a frequency of half of the natural vibration frequency of the structure obtained by micro-tremor measurement, while alternately synchronizing their actions to the two alternating beat sounds, respectively.

Abstract: An improved waterproofing system for the concrete slab of a flat roof on a building is disclosed. The waterproofing system uses hollow plastic panels of designed size, different thickness, and groove and tongue joints for interconnecting the panels. A supplementary waterproofing layer may be installed using sheet membrane materials such as asphalt sheet, metal sheet and other sheets on vertical surfaces, especially the parapet of the roof. The invention further concerns a construction method for applying a fiber mesh reinforcement on the connection joint and for applying fluid-applied materials on the substrate with sheet membrane layers on vertical surfaces. The waterproofing layer of sloped step type, hollow plastic panels of different thickness, permits fast drainage of stagnant water, which inhibits weather damage to the waterproofing layer.

Abstract: An improved waterproofing system for concrete slab of a flat roof on a building is disclosed. The invention concerns a construction method for installing on the concrete substrate a waterproofing layer comprising hollow plastic panels of designed size, different thickness, and the groove and the tongue joint, and installing a supplementary waterproofing layer using sheet membrane materials such as asphalt sheet, metal sheet and other sheets on the vertical surface, especially the parapet of roof. The invention further concerns a construction method for applying fluid-applied materials after reinforcement with fiber mesh on their joint line to connect plastic panels on substrate with sheet membrane layer on the vertical surface. The waterproofing layer of sloped step type, hollow plastic panels of different thickness permits fast drainage of stagnant water, which inhibits weather damage to the waterproofing layer.