Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.

Abstract: A lens assembly includes a first D-cut lens and a lens barrel surrounding a portion of a side surface of the first D-cut lens. The side surface of the first D-cut lens includes a linear portion, and the lens barrel is configured to expose at least a portion of the linear portion of the first D-cut lens in a direction perpendicular to an optical axis.

Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.

Abstract: A method of manufacturing a semiconductor chip and a semiconductor device. The method of manufacturing the semiconductor chip includes a process of dicing a substrate. The substrate includes an active layer and an organic layer on the semiconductor base. Dicing grooves that are extended to face each other along first dicing lines from points, at which the first dicing lines and second dicing lines along which the substrate is to be diced intersect, are formed by recessing some parts of the active layer. Modified patterns are formed within the semiconductor base. The substrate is diced into semiconductor chips by propagating cracks into the substrate from the modified patterns.

Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.

Abstract: An etchant composition includes: an inorganic acid compound at 9.0 wt % to 9.9 wt %; an inorganic salt compound at 5.0 wt % to 10.0 wt %; an organic acid compound at 35 wt % to 45 wt %; a lactate-based compound at 10 wt % to 20 wt %; a nitrogen cyclic compound containing oxygen at 0.1 wt % to 1.0 wt %; and a remaining amount of water such that a total weight of the etchant composition is 100 wt %, wherein the inorganic acid compound is an etchant composition having an acid dissociation constant (pKa) value of ?1.0 to ?3.0.

Abstract: An electronic device is provided. The electronic device includes a communication circuit configured to communicate with an external device, and a processor configured to control the communication circuit, wherein the communication circuit includes a coil antenna including a first coil of a loop type which rotates with a number of times in a first direction, and a second coil of a loop type which is extended from the first coil, configured to rotate with a number of times in a second direction, and spaced from the first coil by a specific distance, and an antenna control circuit electrically connected with the coil antenna and configured to transmit or receive a signal with the coil antenna.

Abstract: An electronic device is provided. The electronic device includes a communication circuit configured to communicate with an external device, and a processor configured to control the communication circuit, wherein the communication circuit includes a coil antenna including a first coil of a loop type which rotates with a number of times in a first direction, and a second coil of a loop type which is extended from the first coil, configured to rotate with a number of times in a second direction, and spaced from the first coil by a specific distance, and an antenna control circuit electrically connected with the coil antenna and configured to transmit or receive a signal with the coil antenna.

Abstract: An electronic device is provided. The electronic device includes a communication circuit configured to communicate with an external device, and a processor configured to control the communication circuit, wherein the communication circuit includes a coil antenna including a first coil of a loop type which rotates with a number of times in a first direction, and a second coil of a loop type which is extended from the first coil, configured to rotate with a number of times in a second direction, and spaced from the first coil by a specific distance, and an antenna control circuit electrically connected with the coil antenna and configured to transmit or receive a signal with the coil antenna.

Abstract: An earthquake alert system using wireless terminals and a method for providing an earthquake alert are provided. The system includes at least one wireless terminal for detecting vibration greater than a predetermined amount and transmitting vibration information generated based on the vibration, and a mobile communication network for transmitting the vibration information to an emergency management agency, and if it is notified by the emergency management agency that the vibration information is caused by an earthquake, determining a propagation direction of the earthquake and transmitting an earthquake alert message to wireless terminals located in the earthquake propagation direction.

Abstract: An automatic air-purifying window automatically purifies polluted indoor air while exhibiting general inherent functions of the window. The automatic air-purifying window comprises a window and a window stile for fixing the window. The window stile comprises a discharge part, an induction part, and an indoor air circulation passageway. The discharge part includes an indoor air induction port, an upper guide member to guide air current induced from the indoor air induction port, and an indoor air discharge port to discharge some portion of the indoor air from the indoor air induction port to the outside. The induction part includes an outdoor air induction port, a lower guide member to guide air current induced from the outdoor air induction port, a purification cartridge, a light-transmission portion, and a purified air discharge port.

Abstract: Disclosed herein is a technique for manufacturing a superconducting tape grown epitaxially by a replication process. According to the technique, a long superconducting tape can be manufactured using a loop-shaped base. Further disclosed is a method for manufacturing a metal oxide device which comprises the steps of forming a solvent-soluble separation layer on a base having a single crystal or textured surface, forming a superconducting layer on the separation layer, forming a support layer on the superconducting layer, and removing the separation layer by dissolution in a solvent. According to the method, it is possible to manufacture a superconducting tape consisting of the superconducting layer and the support layer separated from the bath, and having the same crystallinity as that of the base (replication).

Abstract: A hair restorer composition is produced by mixing 10 to 40 wt % of an Oriental herb extract of, 0.1 to 15 wt % of a viscosity control agent, 30 to 80 wt % of a surfactant, and 0.1 to 15 wt % of an oil. The Oriental herb extract may be obtained by heating Oriental herbs such as ginsengs and Chrysanthemum zawadskii with water for several hours. The composition makes it possible not only to promote restoration of hair and prevent loss of hair but also to mitigate the itching, give nutrition to hair, and improve the scalp. The Oriental herbs include the ginseng and Chrysanthemum zawadskii in a ratio of from 1:9 to 3:2.

Abstract: Disclosed herein is a technique for manufacturing a superconducting tape grown epitaxially by a replication process. According to the technique, a long superconducting tape can be manufactured using a loop-shaped base. Further disclosed is a method for manufacturing a metal oxide device which comprises the steps of forming a solvent-soluble separation layer on a base having a single crystal or textured surface, forming a superconducting layer on the separation layer, forming a support layer on the superconducting layer, and removing the separation layer by dissolution in a solvent. According to the method, it is possible to manufacture a superconducting tape consisting of the superconducting layer and the support layer separated from the bath, and having the same crystallinity as that of the base (replication).

Abstract: Disclosed herein is a reactive sputtering deposition apparatus in which a partition plate is provided between a sputtering target and a substrate. The reactive sputtering deposition apparatus comprises a deposition chamber for creating an inner process atmosphere of the apparatus, a target including a metal material to be deposited, a substrate on which a reaction product of the metal material separated from the target with a reactive gas is deposited, and a partition plate dividing the deposition chamber into a reaction chamber at the side of the substrate and a sputtering chamber at the side of the target and provided between the target and the substrate, wherein an opening is formed through a central portion of the partition plate to allow the metal material separated from the target to reach the substrate.