Abstract: Disclosed is a positive electrode for a lithium-sulfur battery. The positive electrode includes a sulfur-carbon composite as a positive electrode active material. The sulfur-carbon composite includes a porous carbonaceous material having a high porosity and high specific surface area. Therefore, when the sulfur-carbon composite is applied to a battery, the battery shows a reduced initial irreversible capacity and improved output characteristics and life characteristics.

Abstract: The inventive concept relates to a three-dimensional crosslinker composition and a method of manufacturing an electronic device using the same. According to the inventive concept, the three-dimensional crosslinker composition may be represented by Formula 1 below.

Abstract: Disclosed is a positive electrode for a lithium-sulfur battery, including a sulfur-carbon composite as a positive electrode active material. The sulfur-carbon composite includes a porous carbonaceous material having a high specific surface area, and the total pore volume in the carbonaceous material and a volume of pores having a specific diameter are controlled to specific ranges. Also disclosed is a lithium-sulfur battery using the sulfur-carbon composite. The lithium-sulfur battery shows reduced initial irreversible capacity and improved output characteristics and life characteristics.

Abstract: A substrate processing method is provided. The substrate processing method comprises loading a substrate onto a substrate support inside a chamber, forming a plasma inside the chamber, providing a first DC pulse signal to an electromagnet that generates a magnetic field inside the chamber and processing the substrate with the plasma, wherein the first DC pulse signal is repeated at a first period including a first section and a second section subsequent to the first section, the first DC pulse signal has a first level during the first section, and the first DC pulse signal has a second level different from the first level during the second section.

Abstract: A positive electrode for a lithium-sulfur battery is provided. The positive electrode includes a positive electrode active material comprising a first and second sulfur-carbon composites respectively comprising a first and a second carbonaceous materials having a different specific surface area and pore volume from each other, and provides reduced initial irreversible capacity and improved output characteristics and life characteristics of a secondary battery.

Abstract: The present disclosure relates to a healable superplastic amorphous alloy, and specifically, to a healable superplastic amorphous alloy capable of exhibiting superplastic behavior and unique healable behavior by maximizing the complexity of the amorphous structure for an Icosahedral quenched-in nuclei quasi-crystal cluster to be formed in the amorphous matrix through the composition limitation and additive element control of Zr—Cu—Ni—Al alloy.

Abstract: The present invention relates to a novel heterocyclic compound usable in an organic light-emitting device and to an organic light-emitting device comprising same, wherein [chemical formula A] is as described in the detailed description of the invention.

Abstract: A method for preparing a sulfur-carbon composite including a step of pretreating a carbon material is provided. The method is capable of removing water and other impurities from the carbon material effectively, and the sulfur-carbon composite obtained by the method used as a positive electrode active material of a lithium-sulfur battery provides improved sulfur supportability and over-voltage performance of the lithium-sulfur battery, reduced initial irreversible capacity of the positive electrode active material, and improved output characteristics and life characteristics.

Abstract: Present disclosure provides a portable viscometer including a body and a measuring unit disposed on one side of the body. The measuring unit includes a capillary tube detachably attached to the measuring unit, and a first sensor and a second sensor, the first and second sensors being disposed adjacent to the capillary tube and vertically spaced apart from each other, and the capillary tube includes a bead therein. The bead may be fixed on the inner surface of the capillary tube by a fixing compound which is soluble in a fluid to be measured.

Abstract: Present disclosure provides a portable viscometer including a body and a measuring unit disposed on one side of the body. The measuring unit includes a capillary tube detachably attached to the measuring unit, and a first sensor and a second sensor, the first and second sensors being disposed adjacent to the capillary tube and vertically spaced apart from each other, and the capillary tube includes a bead therein. The bead may be fixed on the inner surface of the capillary tube by a fixing compound which is soluble in a fluid to be measured.

Abstract: Provided herein is an apparatus for measuring properties of a fluid, the apparatus including: a light emitting unit configured to emit a first light having a first wavelength and a second light having a second wavelength that is longer than the first wavelength, from outside a fluid accommodating unit where the fluid flows in and out to a measurement area inside the fluid accommodating unit; a light receiving unit disposed outside the fluid accommodating unit and configured to receive the first light and second light that passed the measurement area; and a measuring unit configured to measure the properties of the fluid based on an intensity of the first light and second light that the light emitting unit emitted and an intensity of the first light and second light that the light receiving unit received.

Abstract: A method and apparatus for sensing state of a waste toner box of a system during an electrophotographic developing process. The apparatus and method sense whether or not a waste toner receptacle has been installed prior to initiation of the development process and whether the receptacle is full of waste toner. The receptacle has a semi-transparent body for storing a waste toner removed from a cleaning blade, a photosensor for generating a signal representing whether the waste toner stored in the waste toner receptacle has substantial filled the receptacle as well as whether the waste toner receptacle has been installed.