Abstract: A method of controlling a growth crystallographic plane of a metal oxide semiconductor having a wurtzite crystal structure by using a thermal chemical vapor deposition method includes controlling a growth crystallographic plane by allowing the metal oxide semiconductor to grow in a non-polar direction by using a source material including a thermal decomposition material that reduces a surface energy of a polar plane of the metal oxide semiconductor.

Abstract: An energy harvest is disclosed. The disclosed energy harvest includes: a first charging member including a plurality of first protruding parts; and a second charging member including a plurality of second protruding parts arranged between the first protruding parts and including a material different from that of the first protruding parts. When at least one of the first and second charging members moves, side surfaces of the first protruding parts and side surfaces of the second protruding parts come into contact with each other, or gaps between the side surfaces of the first protruding parts and the side surfaces of the second protruding parts are changed. The energy harvest generates electrical energy from the contact or the gap change.

Abstract: A wireless power transmitter includes an amplifier configured to amplify a power; a transmitter configured to resonate the power amplified by the amplifier; and a reference signal provider configured to provide a reference signal to the amplifier and change a frequency of the reference signal.

Abstract: The purpose of the present invention is to provide a cutting insert which can minimize friction with a chip and maximize heat-radiating performance. To this end, the present invention provides a cutting insert comprising: an upper surface; a lower surface; a plurality of lateral surfaces for connecting the upper surface with the lower surface; a main cutting edge formed between the lateral surface and the upper surface; and a main cutting edge land and a main cutting edge incline formed in series between the main cutting edge and the upper surface, wherein the main cutting edge incline has a first wavy shape in which two or more incline convex parts and two or more incline concave parts are repeated from the main cutting edge land toward the upper surface.

Abstract: A flexible supercapacitor, a method of manufacturing the same, and a device including the same are provided, the flexible supercapacitor includes a first flexible electrode assembly, a second flexible electrode assembly corresponding to the first flexible electrode assembly, a separator for preventing contact between the first flexible electrode assembly and the second flexible electrode assembly, and an electrolyte between the first flexible electrode assembly and the second flexible electrode assembly. The flexible supercapacitor may include a tube including the first flexible electrode assembly, the second flexible electrode assembly, the separator, and the electrolyte.

Abstract: Example embodiments relate to a solar cell including organic nanowires. The solar cell may include a photoelectric conversion layer formed of a p-type material including an organic material and an n-type material including organic nanowires.

Abstract: An injection locked frequency divider is disclosed. The injection-locked frequency divider includes a sub-harmonic injection-locked oscillator, a reference clock divider, a counter, and a variable load resistor control unit. The sub-harmonic injection-locked oscillator has variable load resistors that are adjusted in response to a resistance adjustment signal, and, when oscillation frequency determined based on the magnitudes of the variable load resistors is a sub-harmonic of an injection signal, outputs signals having the oscillation frequency as divided output signals. The reference clock divider generates a count-enable signal from a reference clock signal according to a reference division ratio. The counter generates divided output count signals based on the divided output signals in response to the count-enable signal.

Abstract: According to example embodiments, a method includes dispersing carbon nanotubes in a mixed solution containing a solvent, the carbon nanotubes, and a dispersant, the carbon nanotubes including semiconducting carbon nanotubes, the dispersant comprising a polythiophene derivative including a thiophene ring and a hydrocarbon sidechain linked to the thiophene ring. The hydrocarbon sidechain includes an alkyl group containing a carbon number of 7 or greater. The hydrocarbon sidechain may be regioregularly arranged, and the semiconducting carbon nanotubes are selectively separated from the mixed solution. An electronic device includes semiconducting carbon nanotubes and the foregoing described polythiophene derivative.

Abstract: The present invention relates to a cutting insert. The cutting insert, according to one embodiment of the present invention, comprises: a top surface; a bottom surface; side surfaces which connect the top surface and the bottom surface to each other; a hole which penetrates the top surface and the bottom surface; and cutting edges which are defined by the top surface and the side surfaces, wherein a main cutting edge side surface among the side surfaces is provided with a first relief surface, a transition surface extending from the first relief surface, and a second relief surface extending from the transition surface, the first relief surface is formed such that the relief angle or the relief surface width varies along the cutting edge, and the transition surface is provided with a plurality of ridges in order to reinforce the rigidity of the cutting edge.

Abstract: A synchronous rectifier includes: a rectifying circuit including transistors, the rectifying circuit being configured to generate rectified power by rectifying input power input to an input terminal of the rectifying circuit depending on switching operations of the transistors, and output the rectified power to an output terminal of the rectifying circuit; and a controller configured to apply a gate signal to each of the, and adjust a pulse width of the gate signal depending on a difference between the input power and the gate signal.

Abstract: A rectifier includes: a rectifying circuit configured to rectify alternating current (AC) power into direct current (DC) power through a switching operation; a driver configured to apply a switching signal to the rectifying circuit; and a signal modulator configured to select a parameter from among parameters of the switching signal based on a frequency of the switching signal, and adjust the selected parameter.

Abstract: The present invention relates to a metal encapsulant having good heat dissipation properties, a method of manufacturing same, and a flexible electronic device encapsulated in said metal encapsulant, and particularly, to a metal encapsulant having excellent flexibility, moisture resistance, workability, and heat dissipation properties by forming a coating layer including a metal graphite composite on one surface thereof, to a method of manufacturing same, and a flexible electronic device encapsulated in said metal encapsulant.

Abstract: According to example embodiments, a method includes dispersing carbon nanotubes in a mixed solution containing a solvent, the carbon nanotubes, and a dispersant, the carbon nanotubes including semiconducting carbon nanotubes, the dispersant comprising a polythiophene derivative including a thiophene ring and a hydrocarbon sidechain linked to the thiophene ring. The hydrocarbon sidechain includes an alkyl group containing a carbon number of 7 or greater. The hydrocarbon sidechain may be regioregularly arranged, and the semiconducting carbon nanotubes are selectively separated from the mixed solution. An electronic device includes semiconducting carbon nanotubes and the foregoing described polythiophene derivative.

Abstract: A hybrid generator using a thermoelectric generation and a piezoelectric generation are provided. The hybrid generator includes first and second insulating layers spaced apart from each other; a thermoelectric structure disposed between the first and second insulating layers; a first electrode disposed on the second insulating layer; a piezoelectric structure disposed on the first electrode; a third insulating layer disposed on the piezoelectric structure; and a second electrode disposed on the third insulating layer.

Abstract: Provided are an energy harvester using a mass, and a mobile device including the energy harvester. The mobile device includes an energy harvester connected to a mobile device body to generate electric energy. The energy harvester includes an energy generator configured to generate electric energy by using a mechanical force applied by a movement of the mobile device body.

Abstract: An injection locked frequency divider is disclosed. The injection-locked frequency divider includes a sub-harmonic injection-locked oscillator, a reference clock divider, a counter, and a variable load resistor control unit. The sub-harmonic injection-locked oscillator has variable load resistors that are adjusted in response to a resistance adjustment signal, and, when oscillation frequency determined based on the magnitudes of the variable load resistors is a sub-harmonic of an injection signal, outputs signals having the oscillation frequency as divided output signals. The reference clock divider generates a count-enable signal from a reference clock signal according to a reference division ratio. The counter generates divided output count signals based on the divided output signals in response to the count-enable signal.

Abstract: Provided is an energy harvesting device having a self-powered touch sensor so that the energy harvesting device is capable of sensing pressure due to an external touch without using external power and harvesting and storing energy generated in response to the touch pressure. The energy harvesting device includes first and second electrodes facing each other, an energy generation layer disposed on the first electrode, and an elastic layer disposed on the second electrode layer, the elastic layer facing the energy generation layer and being configured to be elastically deformed according to pressure applied to the elastic layer. The energy generation layer is configured to generate energy according to the pressure applied to the energy generation layer.

Abstract: An energy harvester is provided. The energy harvester includes a first friction member, and a second friction member arranged to face the first friction member and generating electrical energy by causing friction with the first friction member. At least one of the first friction member and the second friction member includes a pyroelectric material converting frictional heat generated due to friction of the first and second friction members into electrical energy. While the energy harvester generates electrical energy by triboelectrification, the energy harvester may convert frictional heat into electrical energy by using a pyroelectric material.

Abstract: Compositions and methods for controlling pests are provided. The methods involve transforming organisms with a nucleic acid sequence encoding an insecticidal protein. In particular, the nucleic acid sequences are useful for preparing plants and microorganisms that possess insecticidal activity. Thus, transformed bacteria, plants, plant cells, plant tissues and seeds are provided. Compositions are insecticidal nucleic acids and proteins of bacterial species. The sequences find use in the construction of expression vectors for subsequent transformation into organisms of interest including plants, as probes for the isolation of other homologous (or partially homologous) genes. The pesticidal proteins find use in controlling, inhibiting growth or killing Lepidopteran, Coleopteran, Dipteran, fungal, Hemipteran and nematode pest populations and for producing compositions with insecticidal activity.

Abstract: A method of controlling a growth crystallographic plane of a metal oxide semiconductor having a wurtzite crystal structure by using a thermal chemical vapor deposition method includes controlling a growth crystallographic plane by allowing the metal oxide semiconductor to grow in a non-polar direction by using a source material including a thermal decomposition material that reduces a surface energy of a polar plane of the metal oxide semiconductor.