Abstract: A recording head has a near-field transducer at a media-facing surface of the recording head and a write pole on a first side of the near field transducer. A first coil induces a first flux in the write pole. The recording head includes a shield on a second side of the near-field transducer that faces away from the first side. A second coil is proximate the shield and induces a second flux in the shield that controls a field angle of the first flux.

Abstract: A charging method and an apparatus of an electric vehicle are provided. The charging is executed via connection even between an electric vehicle and a charger that employ different charging methods, irrespective of a charging method of a charger. The apparatus includes a gender converter that is connected between a vehicle inlet and a charger connector according to one of a DC combo standard specification charger and a CHAdeMO standard specification charger to supply DC power for battery charging, communication, and ground connection between a connected charger and the vehicle. A controller determines specifications of the charger connected to the vehicle inlet from a signal transmitted from the charger and executes high-speed charging according to specifications of the connected charger to perform high-speed charging of a vehicle battery with DC power supplied from the charger.

Abstract: Embodiments described herein involve a method comprising generating a seek command in a heat-assisted magnetic recording (HAMR) device. A first current is supplied to a laser diode of the HAMR device in response to the seek command to preheat the laser diode. The first current is insufficient to cause erasure of data on media of the HAMR device. A second current that is greater than the first current is supplied to the laser diode for writing to a magnetic recording medium of the HAMR device after executing the seek command. Preheating the laser diode reduces a likelihood of a laser mode hop occurring while writing to the medium.

Abstract: An apparatus includes a near-field transducer (NFT) of a heat-assisted magnetic recording head. The NFT includes a substantially C-shaped portion and a peg portion extending from the substantially C-shaped portion. A planar member is disposed adjacent the NFT. The planar member includes a bottom surface configured to support surface plasmon polaritons (SPPs) that resonantly excite the NFT. A barrier member is installed within the planar member and is arranged to encompass at least a tip portion of the peg.

Abstract: Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.

Abstract: Provided are a method for manufacturing a perovskite nanocrystal particle light-emitter where an organic ligand is substituted, a light-emitter manufactured thereby, and a light emitting device using the same. A method for manufacturing an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter where an organic ligand is substituted may comprise the steps of: preparing a solution including an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter, wherein the organic-inorganic-hybrid perovskite nanocrystal particle light-emitter comprises an organic-inorganic-hybrid perovskite nanocrystal structure and a plurality of first organic ligands surrounding the organic-inorganic-hybrid perovskite nanocrystal structure; and adding, to the solution, a second organic ligand which is shorter than the first organic ligands or includes a phenyl group or a fluorine group, thereby substitutes the first organic ligands with the second organic ligand.

Abstract: A method of manufacturing a copper thin film using a single-crystal copper target, and more particularly, a method of manufacturing a copper thin film using a single-crystal copper target, wherein a copper thin film is deposited on a sapphire disk substrate through high-frequency sputtering using a single-crystal copper target grown through a Czochralski process, and may thus exhibit high quality in terms of crystallinity. The method includes depositing a copper thin film on a sapphire disk substrate through a high-frequency sputtering process using a disk-shaped single-crystal copper target obtained by cutting cylindrical single-crystal copper grown through a Czochralski process.

Abstract: Provided are: a light-emitting layer for a perovskite light-emitting device; a method for manufacturing the same; and a perovskite light-emitting device using the same. The method of the present invention for manufacturing a light-emitting layer for an organic and inorganic hybrid perovskite light-emitting device comprises a step of forming a first nanoparticle thin film by coating, on a member for coating a light-emitting layer, a solution comprising organic and inorganic perovskite nanoparticles including an organic and inorganic perovskite nanocrystalline structure. Thereby, a nanoparticle light emitter has therein an organic and inorganic hybrid perovskite having a crystalline structure in which FCC and BCC are combined; forms a lamella structure in which an organic plane and an inorganic plane are alternatively stacked; and can show high color purity since excitons are confined to the inorganic plane.

Abstract: Provided are an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter having a two-dimensional structure, a method for producing the same, and a light emitting device using the same. The organic-inorganic-hybrid perovskite nanocrystal particle light-emitter having a two-dimensional structure comprises an organic-inorganic-hybrid perovskite nanocrystal structure having a two-dimensional structure which can be dispersed in an organic solvent. Accordingly, the nanocrystal particle light-emitter comprises an organic-inorganic-hybrid perovskite nanocrystal having a crystal structure combining FCC and BCC; forms a lamellar structure where organic planes and inorganic planes are accumulated in an alternating manner; and can exhibit high color purity by confining excitons in the inorganic planes.

Abstract: Provided are perovskite nanocrystalline particle and an optoelectronic device using the same. The perovskite nanocrystalline particle may include a perovskite nanocrystalline structure while being dispersible in an organic solvent. Accordingly, the perovskite nanocrystalline particle in accordance with the present invention has therein a perovskite nanocrystal having a crystalline structure in which FCC and BCC are combined; forms a lamellar structure in which an organic plane and an inorganic plane are alternately stacked; and can show high color purity since excitons are confined to the inorganic plane. In addition, the perovskite nanocrystalline particle have a particle size greater than or equal to a Bohr diameter beyond a quantum confinement effect, and simultaneously can implement high emission efficiency and emission wavelength which is almost not dependent on particle size.

Abstract: An apparatus is includes a near field transducer positioned adjacent a media-facing surface and at the end of a waveguide having at least one core layer and a cladding layer. The apparatus also includes at least one optical reflector positioned adjacent opposing cross-track edges of the near field transducer and/or adjacent a down-track side of the near-field transducer.

Abstract: Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.

Abstract: A waveguide a core extending along a light propagation and a coupling layer adjacent one side of the core along the light propagation direction. A gradient index material is adjacent to at least one side of the coupling layer. The gradient index material has a first refractive index proximate the coupling layer and a second refractive index away from the coupling layer. The gradient index material is configured to direct light from an input facet to the core layer.

Abstract: Provided are a metal halide perovskite light emitting device and a method of manufacturing the same. The metal halide perovskite light emitting device includes a substrate, a first electrode formed on the substrate, a light emitting layer formed on the first electrode and including a metal halide perovskite material, and a second electrode disposed on the light emitting layer, the first electrode includes a conductive layer and a surface energy-tuning layer disposed on the conductive layer, the conductive layer includes a conductive polymer and a first fluorine-based material, and the surface energy-tuning layer includes a second fluorine-based material but does not include the conductive polymer. Therefore, the first electrode can come in ohmic contact with a metal halide perovskite light emitting layer by adjusting a work function, and can prevent the dissociation of excitons to enhance luminous efficiency, thereby effectively improving efficiency of a light emitting device.

Abstract: Disclosed is a printed-circuit board (PCB) structure having an electromagnetic-tunnel-embedded architecture, the PCB structure including a PCB, and an EM-tunnel-embedded in the PCB, wherein the EM-tunnel includes a dielectric core and a metal clad which surrounds the dielectric core and has at least one port exposed to a surface of the PCB.

Abstract: A near-field transducer includes an enlarged portion and a peg protruding from a first edge. The enlarged portion has a second edge facing away from the first edge. The near-field transducer includes a heat sink disposed on the enlarged portion and with an outline shape that matches that of the enlarged portion. The heat sink is disposed at a first separation distance from the first edge of the enlarged portion and a second, greater, separation distance from the second edge of the enlarged portion. The first separation distance is greater than the second separation distance.

Abstract: Provided are a metal halide perovskite light emitting device and a method of manufacturing the same. The method of manufacturing a metal halide perovskite light emitting device includes preparing a substrate having a positive electrode formed on an upper part thereof, starting coating the substrate on which the positive electrode is formed with a metal halide perovskite light emitting layer, forming a metal halide perovskite light emitting layer by dripping a low-molecular-weight organic substance solution during the coating of the metal halide perovskite light emitting layer, and forming a negative electrode on the light emitting layer.

Abstract: An apparatus includes a write head comprising a near-field transducer at a media-facing surface of the write head and a waveguide extending along a light-propagation direction. The waveguide is configured to receive light emitted from a light source at a fundamental transverse electric mode. The waveguide is configured to deliver the light to the near-field transducer at a transverse magnetic mode which directs surface plasmons to a recording medium in response thereto. The waveguide comprises a core with first and second tapers separated by a straight portion of constant cross sectional width. The first and second tapers successively decrease a cross-sectional width of the core as it nears the near-field transducer. The waveguide includes an end portion between the second taper and the near field transducer. The end portion comprises a top cladding layer, aside cladding layer, and a bottom cladding layer on the side cladding layer.

Abstract: Disclosed is a largescale nanofiber electrode array using aligned metal nanofiber, which includes preparing a metal precursor/organic polymer complex solution, forming an aligned metal/polymer complex nanofiber pattern with a continuously connected shape on a substrate to by injecting the solution with an electric field aided robotic nozzle printer and moving the substrate, and performing thermal treatment on the complex nanofiber pattern to form an aligned nanofiber metal pattern. Accordingly, the position and direction of the metal nanofiber pattern can be accurately controlled, and the metal nanofiber pattern can be aligned in a desired direction.

Abstract: Provided are a conductive thin film, a method for producing same, and an electronic element comprising same. The conductive thin film has excellent conductivity, allows the easy adjustment of a work function, also allows easy film formation, and thus can be advantageously used in various electronic elements, such as organic light-emitting devices and organic solar cells.