Abstract: Disclosed is a thermoelectric composite material includes a thermoelectric material including crystal grains; and a MXene inserted at boundaries of the crystal grains consisting of the thermoelectric material. Accordingly, the thermoelectric composite material may have a reduced thermal conductivity and an increased electrical conductivity. Furthermore, mechanical properties of the thermoelectric composite material may be improved. Thus, the thermoelectric composite material may improve the thermoelectric ability of a thermoelectric module including the same. A method of manufacturing the thermoelectric composite material includes coating MXene on a surface of a thermoelectric material powder including crystal grains; and sintering the thermoelectric material powder coated with the MXene to form a sintered body including the MXene inserted at boundaries of the crystal grains consisting of the thermoelectric material.

Abstract: The present disclosure relates to a paste for ohmic contact to p-type semiconductor, including a metal oxide and a binder, wherein the metal oxide is a rhenium oxide or a molybdenum oxide.

Abstract: Disclosed is a system for integrally treating a composite waste gas including nitrogen oxides (NOx and N2O), chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), and perfluorinated compounds (PFCs). The system includes a first wet processor configured to wash and adsorb dust including gases, SOx, and ash dissolved in water, a decomposing reactor configured to receive waste gas processed in the first wet processor and process nitrogen oxides (NOx and N2O), fluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), and perfluorinated compounds (PFCs) in the waste gas, and a second wet processor configured to receive the waste gas processed in the decomposing reactor and wash and adsorb the received waste gas. The system can efficiently treat a large amount of composite waste gas.

Abstract: Provided is a self-resonance tuning piezoelectric energy harvester. The self-resonance tuning piezoelectric energy harvester includes a piezoelectric beam which extends along a horizontal direction, a fixing element which fixes two ends of the piezoelectric beam, and a mass which is connected to the piezoelectric beam movably along the piezoelectric beam, wherein the mass includes a through-hole through which the piezoelectric beam passes, and makes the movement through the through-hole. According to the principle of continuous movement to the resonance position, the mass of the self-resonance tuning piezoelectric energy harvester induces the piezoelectric beam to generate displacement to the maximum and maximize the electricity production capacity of the piezoelectric energy harvester.

Abstract: A method for manufacturing a thermoelectric material is provided. According to the method, a first shaped body is formed from a thermoelectric powder, of which a crystal has a layer structure. An extruded body is formed by extruding the first shaped body. A plurality of cut-off pieces are formed by cutting the extruded body along a cross-section perpendicular to an extrusion direction. A second shaped body is formed by stacking and pressing the cut-off pieces along a direction perpendicular to the extrusion direction. According to the above, a thermoelectric ability of a thermoelectric material and an efficiency for manufacturing a thermoelectric module may be improved.

Abstract: Provided is a dielectric layer that has a rock salt structure in a room temperature stable phase. The dielectric layer is made of a compound having a chemical formula of BexM1-xO, where M includes one of alkaline earth metals and x has a value greater than 0 and less than 0.5.

Abstract: A thermoelectric composite material includes MXene inserted at a boundary of a crystal grain consisting of a thermoelectric material. Accordingly, the thermoelectric composite material may have a reduced thermal conductivity and an increased electrical conductivity. Furthermore, a mechanical property of the thermoelectric composite material may be improved. Thus, the thermoelectric composite material may improve a thermoelectric ability of a thermoelectric module.

Abstract: Disclosed is a curved piezoelectric device maximizing an electrical potential of the piezoelectric material corresponding to an external mechanical stress.

Abstract: Disclosed herein is a smart wearable lens mounted with an all-solid-state thin film secondary battery including a flexible substrate, a cathode current collector, a cathode, a solid electrolyte, an anode, and an anode current collector. The smart wearable lens mounted with the all-solid-state thin film secondary battery may be stably and continuously supplied with power and has a low self-discharge rate. In addition, the smart wearable lens may minimize aversion when humans are wearing the smart wearable lens and be suitably used for a curved lens, especially a micro-lens such as a contact lens.

Abstract: The present disclosure relates to a paste for ohmic contact to p-type semiconductor, including a metal oxide and a binder, wherein the metal oxide is a rhenium oxide or a molybdenum oxide.

Abstract: A capacitor for a semiconductor memory element includes a lower electrode, a dielectric layer disposed on the lower electrode and including titanium oxide, and an upper electrode disposed on the dielectric layer. The lower electrode includes a first metal and a second metal, the first metal including at least one selected from the group consisting of platinum (Pt), osmium (Os), rhodium (Rh) and palladium (Pd), the second metal including at least one selected from the group consisting of ruthenium (Ru) and iridium (Ir).

Abstract: A capacitor for a semiconductor memory element includes a lower electrode, a dielectric layer disposed on the lower electrode and including titanium oxide, and an upper electrode disposed on the dielectric layer. The lower electrode includes a first metal and a second metal, the first metal including at least one selected from the group consisting of platinum (Pt), osmium (Os), rhodium (Rh) and palladium (Pd), the second metal including at least one selected from the group consisting of ruthenium (Ru) and iridium (Jr).

Abstract: A method for manufacturing a thermoelectric material is provided. According to the method, a first shaped body is formed from a thermoelectric powder, of which a crystal has a layer structure. An extruded body is formed by extruding the first shaped body. A plurality of cut-off pieces are formed by cutting the extruded body along a cross-section perpendicular to an extrusion direction. A second shaped body is formed by stacking and pressing the cut-off pieces along a direction perpendicular to the extrusion direction.

Abstract: A centering device for determining a position of a vehicle includes free roller parts configured to respectively seat left and right vehicle wheels of the vehicle. A driving body pushes the vehicle wheels when the vehicle is seated on the free roller parts. The centering device may be simply and rapidly installed on a floor with a minimal height. Thus, complicated construction is avoided. The centering device also has a plurality of sensors and a sensor cleaner on a first plate and a second plate. The first and second plates are driven at the same time, in opposite directions to center the vehicle.

Abstract: Disclosed is a manganese tin oxide-based transparent conducting oxide (TCO) with an optimized composition, which has low surface roughness, low sheet resistance and high transmittance even when deposited at room temperature, a multilayer transparent conductive film using the same and a method for fabricating the same. The manganese tin oxide-based transparent conducting oxide has a composition of MnxSn1-xO (0<x?0.055), and the multilayer transparent conductive film includes: a manganese tin oxide-based transparent conducting oxide having a composition of MnxSn1-xO (0<x?0.055); a metal thin film deposited on the manganese tin oxide-based transparent conducting oxide; and a manganese tin oxide-based transparent conducting oxide having a composition of MnxSn1-xO (0<x?0.055) deposited on the metal thin film.

Abstract: Disclosed is a curved piezoelectric device maximizing an electrical potential of the piezoelectric material corresponding to an external mechanical stress.

Abstract: Disclosed is a manganese tin oxide-based transparent conducting oxide (TCO) with an optimized composition, which has low surface roughness, low sheet resistance and high transmittance even when deposited at room temperature, a multilayer transparent conductive film using the same and a method for fabricating the same. The manganese tin oxide-based transparent conducting oxide has a composition of MnxSn1-xO (0<x?0.055), and the multilayer transparent conductive film includes: a manganese tin oxide-based transparent conducting oxide having a composition of MnxSn1-xO (0<x?0.055); a metal thin film deposited on the manganese tin oxide-based transparent conducting oxide; and a manganese tin oxide-based transparent conducting oxide having a composition of MnxSn1-x(0<x?0.055) deposited on the metal thin film.

Abstract: A method of fabricating a cathode for a thin film battery includes depositing a cathode active material on a substrate, and crystallizing the cathode active material by irradiating laser onto the cathode active material. The cathode active material may be deposited on the substrate at normal temperature, and a light and easily processable polymer substrate may be used by crystallizing the cathode active material at low temperature using laser. A thin film battery including the cathode fabricated by the above method has excellent charging/discharging characteristics such as high discharge capacity.

Abstract: A centering device for determining a position of a vehicle includes free roller parts configured to respectively seat left and right vehicle wheels of the vehicle. A driving body pushes the vehicle wheels when the vehicle is seated on the free roller parts. The centering device may be simply and rapidly installed on a floor with a minimal height. Thus, complicated construction is avoided. The centering device also has a plurality of sensors and a sensor cleaner on a first plate and a second plate. The first and second plates are driven at the same time, in opposite directions to center the vehicle.

Abstract: The present disclosure provides a gas sensor including: a substrate; an electrode formed on the substrate; and a gas-sensing layer formed on the electrode, wherein the gas-sensing layer is a self-heating nanocolumnar structure having nanocolumns formed on the electrode and inclined with respect to the electrode with an angle of 60-89° and gas diffusion pores formed between the nanocolumns. The gas sensor according to the present disclosure requires no additional heater since it self-heats owing to the nanocolumnar structure and exhibits superior gas sensitivity even when no heat is applied from outside. Also, it can be mounted on mobile devices such as mobile phones because it consumes less power.