Abstract: Disclosed is a method for preparing a ternary alloy catalyst with polydopamine coating and a ternary alloy catalyst prepared thereby. The method for preparing a ternary alloy catalyst according to the present disclosure may provide a ternary alloy catalyst with increased resistance to carbon monoxide (CO) poisoning in which polydopamine is utilized as a coating material for a ternary alloy catalyst having a core-shell structure containing platinum to suppress the growth of particles during subsequent high-temperature heat treatment, and nickel (Ni), which is a transition metal, is diffused inside to form a core, thereby effectively preventing elution of nickel under an acidic condition.

Abstract: A semiconductor chip includes a semiconductor substrate including a bump region and a non-bump region, a bump on the bump region, and a passivation layer on the bump region and the non-bump region of the semiconductor substrate. No bump is on the non-bump region. A thickness of the passivation layer in the bump region is thicker than a thickness of the passivation layer in the non-bump region. The passivation layer includes a step between the bump region and the non-bump region.

Abstract: The atomic magnetometer includes a light source device configured to output a linearly polarized irradiation light and a circularly polarized pump light, a first vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a first transmitted light, a second vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a second transmitted light, a magnetic field application device configured to apply a bias magnetic field in opposite directions to the first vapor cell and the second vapor cell, and a measuring device configured to obtain the magnetic field signal based on a differentiation of a first polarization rotation signal corresponding to a polarization state of the first transmitted light and a second polarization rotation signal corresponding to a polarization state of the second transmitted light.

Abstract: A wireless power transmission system and method are disclosed. The wireless power transmission system includes a plurality of wireless power transmitters configured to provide power to a plurality of wireless power receivers, and a controller configured to control the wireless power transmitters based on information of the wireless power receivers. The controller is configured to receive information of a wireless power receiver from the wireless power receiver, calculate a transmission parameter associated with a transmission efficiency of power to be provided to the wireless power receiver using the information of the wireless power receiver, and provide power to the wireless power receiver through the wireless power transmitters based on the transmission parameter.

Abstract: A pulse measurement system of a vehicle includes at least one vehicle device and a pulse measurement apparatus. The vehicle device is configured to recognize a user who rides in the vehicle and to provide information of the user. The pulse measurement apparatus is configured to recognize the user based on the information of the user received from the at least one vehicle device, to set a frequency band of a filter to a first frequency band or a second frequency band based on information of the recognized user, and to detect pulse information of the user based on a signal extracted from the signal reflected from the user by the filter when measuring a pulse of the user.

Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.

Abstract: A semiconductor device includes a conductive component on a substrate, a passivation layer on the substrate and including an opening that exposes at least a portion of the conductive component, and a pad structure in the opening and located on the passivation layer, the pad structure being electrically connected to the conductive component. The pad structure includes a lower conductive layer conformally extending on an inner sidewall of the opening, the lower conductive layer including a conductive barrier layer, a first seed layer, an etch stop layer, and a second seed layer that are sequentially stacked, a first pad layer on the lower conductive layer and at least partially filling the opening, and a second pad layer on the first pad layer and being in contact with a peripheral portion of the lower conductive layer located on the top surface of the passivation layer.

Abstract: A low-loss spiral coil includes a conducting wire wound N turns of which a width of each of wires corresponding to each of sections of the conducting wire is determined by setting an entire width of the conducting wire to be a width of M sections of the conducting wire, and then determining the width of each of the wires such that a resistance of the spiral coil formed based on the width of the M sections is minimized.

Abstract: A pulse measurement apparatus, a method therefor, and a vehicle system are provided. The pulse measurement apparatus includes a communicator configured to transmit a first signal to a user and receive a second signal reflected from the user during a predetermined time, a filter configured to extract a signal of a set frequency band from the second signal, a setting device configured to set a frequency band of the filter to a first frequency band or a second frequency band, and a pulse detector configured to measure a pulse from the signal extracted by the filter, analyze an average pulse, and detect pulse information of the user from the analyzed result.

Abstract: An apparatus and method for transmitting and receiving magnetic field signals in a magnetic field communication system are provided. The apparatus includes a controller configured to generate a communication signal, matching units that are configured to receive the communication signal and that respectively correspond to different matching frequencies, and loop antennas that are connected to the matching units, respectively, and that are configured to convert communication signals according to the different matching frequencies into magnetic transmission signals in the form of magnetic field energy and to transmit the magnetic transmission signals.

Abstract: A measurement apparatus for measuring a coating amount of a slurry according to the present disclosure includes a light emitter configured to irradiate terahertz wave onto a release paper coated with the slurry, a light receiver configured to receive the terahertz wave, which is irradiated from the light emitter and passes through the release paper coated with the slurry, to obtain a power of the terahertz wave, and a calculating part configured to calculate a thickness of an electrode, formed from the slurry applied to the release paper, based on the power of the terahertz wave received by the light receiver.

Abstract: Disclosed is a resonator for expanding a transfer distance. A conical resonator includes a metal layer configured to operate according to a resonant frequency, and a dielectric layer coupled to the top or bottom of the metal layer to space the metal layer apart from another metal layer without overlap, wherein the metal layer and the dielectric layer have a Swiss-roll structure, and include an input face to which power is supplied on the bottom and an open face on the top.

Abstract: A semiconductor device includes a conductive component on a substrate, a passivation layer on the substrate and including an opening that exposes at least a portion of the conductive component, and a pad structure in the opening and located on the passivation layer, the pad structure being electrically connected to the conductive component. The pad structure includes a lower conductive layer conformally extending on an inner sidewall of the opening, the lower conductive layer including a conductive barrier layer, a first seed layer, an etch stop layer, and a second seed layer that are sequentially stacked, a first pad layer on the lower conductive layer and at least partially filling the opening, and a second pad layer on the first pad layer and being in contact with a peripheral portion of the lower conductive layer located on the top surface of the passivation layer.

Abstract: The atomic magnetometer includes a light source device configured to output a linearly polarized irradiation light and a circularly polarized pump light, a first vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a first transmitted light, a second vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a second transmitted light, a magnetic field application device configured to apply a bias magnetic field in opposite directions to the first vapor cell and the second vapor cell, and a measuring device configured to obtain the magnetic field signal based on a differentiation of a first polarization rotation signal corresponding to a polarization state of the first transmitted light and a second polarization rotation signal corresponding to a polarization state of the second transmitted light.

Abstract: A semiconductor device includes a first conductive pattern at an upper portion of a first insulating interlayer on a first substrate, a first plurality of conductive nanotubes (CNTs) extending vertically, a second conductive pattern at a lower portion of a second insulating interlayer beneath a second substrate, and a second plurality of CNTs extending vertically. A lower surface of the second insulating interlayer contacts an upper surface of the first insulating interlayer. At least a portion of a sidewall of each of the first plurality of CNTs is covered by the first conductive pattern, and at least a portion of a sidewall of each of the second plurality of CNTs is covered by the second conductive pattern. The first and second conductive patterns vertically face each other, and at least one of the first plurality of CNTs and at least one of the second plurality of CNTs contact each other.

Abstract: A global cloud network quality measurement method may include generating an Internet protocol (IP) list of open web servers having at least one externally open port for each country; collecting packet data through communication with each of the open web servers based on the IP list; and analyzing a network quality with respect to at least one of a region, an Internet service provider (ISP), and an autonomous system number (ASN) based on the collected packet data.

Abstract: A bevel etching apparatus includes a chuck plate that is configured to receive a substrate, a lower ring surrounding a circumference of the chuck plate, a cover plate on the chuck plate, and an upper ring surrounding a circumference of the cover plate. The lower ring includes a ring base and a protrusion that extends upwardly from an edge of the ring base and surrounds a lower portion of a sidewall of the substrate.

Abstract: A semiconductor device includes a protective layer, a redistribution pattern, a pad pattern and an insulating polymer layer. The protective layer may be formed on a substrate. The redistribution pattern may be formed on the protective layer. An upper surface of the redistribution may be substantially flat. The pad pattern may be formed directly on the redistribution pattern. An upper surface of the pad pattern may be substantially flat. The insulating polymer layer may be formed on the redistribution pattern and the pad pattern. An upper surface of the insulating polymer layer may be lower than the upper surface of the pad pattern. The semiconductor device may have a high reliability.

Abstract: There are provided a multi-bay antenna apparatus and an operation method thereof. A multi-bay antenna apparatus may include a first section, a first array antenna mounted in the first section to receive a signal in a predetermined frequency band, a second section movably coupled with the first section, and a second array antenna mounted in the second section to receive a signal in a predetermined frequency band.

Abstract: A semiconductor device includes a protective layer, a redistribution pattern, a pad pattern and an insulating polymer layer. The protective layer may be formed on a substrate. The redistribution pattern may be formed on the protective layer. An upper surface of the redistribution may be substantially flat. The pad pattern may be formed directly on the redistribution pattern. An upper surface of the pad pattern may be substantially flat. The insulating polymer layer may be formed on the redistribution pattern and the pad pattern. An upper surface of the insulating polymer layer may be lower than the upper surface of the pad pattern. The semiconductor device may have a high reliability.