Abstract: A lawn mower includes a blade, a motor connected to the blade, and a housing storing the blade in the housing and is configured to mow grass underneath the housing. The lawn mower includes a grass container to contain the mowed grass and a connecting member that connects the housing to the grass container. The housing is provided with a ceiling opening communicating with a flow path inside the connecting member. The ceiling opening overlaps with a region corresponding to a rotation range, of the blade, projected upward along a drive shaft.

Abstract: Embodiments of the present disclosure generally relate to a vertical cavity surface emitting laser, a head gimbal assembly for mounting a vertical cavity surface emitting laser, and devices incorporating such articles. In an embodiment, a vertical cavity surface emitting laser (VCSEL) device is provided. The VCSEL device includes a chip for mounting on a slider and two laser diode electrodes. The chip has six surfaces, wherein a first surface of the chip is for facing the slider, a second surface of the chip is opposite the first surface, and the two laser diode electrodes are positioned in any combination on one or more of a third surface, a fourth surface, a fifth surface, or a sixth surface of the chip.

Abstract: Embodiments of the present disclosure generally relate to a vertical cavity surface emitting laser (VCSEL), a head gimbal assembly for mounting a VCSEL, devices incorporating such articles, and to a process for forming a VCSEL. In an embodiment, a process for forming a VCSEL device is provided. The process includes forming a trench in a substrate, forming two laser diode electrodes in the trench, and after forming the two laser diode electrodes, cutting the substrate along the trench to form a VCSEL, the VCSEL comprising a chip for mounting on a slider, the chip having six surfaces, wherein a first surface of the chip is for facing the slider, a second surface of the chip is opposite the first surface, the two laser diode electrodes being positioned in any combination on one or more of a third surface, a fourth surface, a fifth surface, or a sixth surface.

Abstract: Embodiments of the present disclosure generally relate to a vertical cavity surface emitting laser (VCSEL), a head gimbal assembly for mounting a VCSEL, devices incorporating such articles, and to a process for forming a VCSEL. In an embodiment, a VCSEL device provided. The VCSEL device includes a chip for mounting on a slider, the chip having a plurality of surfaces and a notch, the plurality of surfaces comprising: a bottom surface for facing the slider; a top surface opposite the bottom surface; and a plurality of side surfaces, wherein the notch forms a recessed edge spaced away from the bottom surface and toward the top surface, the notch having a shoulder, a side, and an angle (?1) between the shoulder and the side. The VCSEL device further includes two laser diode electrodes positioned in any combination on one or more of the plurality of surfaces of the chip.

Abstract: A heat-assisted magnetic recording (HAMR) head has a slider with a gas-bearing-surface (GBS). The slider supports a near-field transducer (NFT) and a main magnetic pole that has a step or recess in the NFT-facing surface near the GBS that contains plasmonic material. A thermal shunt is located between the NFT and the main pole to allow heat to be transferred away from the optical spot generated by the NFT. The NFT-facing surface of the main pole that is recessed from the step away from the GBS is in contact with the thermal shunt, and the thermal shunt is in contact with the plasmonic material in the step in the back region recessed from the GBS, so there is no increase in the spacing between the NFT and a large portion of the main pole.

Abstract: A heat-assisted magnetic recording (HAMR) disk drive uses a semiconductor laser mounted on a slider to deliver light to a near-field transducer (NFT) via a waveguide located inside the slider. The waveguide includes a core and cladding material that is transparent to the laser light and surrounds the core. Layers of stray light absorption material are located inside the slider on opposite edges of the waveguide core in the same plane as the core and on opposite sides of the waveguide core in planes spaced from the plane of the core. Portions of the waveguide cladding material are located between the waveguide core and the stray light absorption layers. The stray light absorption layers absorb light that leaks into the cladding material and substantially reduces stray light reflected to the laser to prevent undesirable laser power fluctuation.

Abstract: According to one embodiment, a magnetic disk device includes a recording medium, a recording head including a main magnetic pole, a write shield magnetic pole, a coil, and a spin torque oscillator provided between the main magnetic pole and the write shield magnetic pole and a controller including a record current supply circuit and a drive current supply circuit. The controller executes a process of monitoring variation of a resistance value of the spin torque oscillator while increasing the record current in a state in which the spin torque oscillator is energized and detecting a record current value when the resistance value is increased most largely, and a process of setting the detected record current value to a lower limit of the record current supplied to the coil.

Abstract: An electrical steel sheet is described, which has an insulating coating on its surface. The insulating coating is free of chromium and comprises plate-like particles of inorganic compound and a metal phosphate. The plate-like particles of inorganic compound are in the form of secondary particles, which are formed by aggregating primary particles, and present in an amount of not less than 0.1 parts by mass and not greater than 20 parts by mass, with respect to 100 parts by mass of the metal phosphate. The secondary particles have an average particle diameter of no less than 0.05 ?m and no greater than 5 ?m, and have a specific surface area of 1 to 80 m2/g. The primary particles have an aspect ratio of 50 to 1000. The electrical steel sheet has excellent heat resistance, corrosion resistance, appearance, and insulating properties.

Abstract: A heat-assisted magnetic recording (HAMR) head for recording data in data tracks of a HAMR disk has a gas-bearing slider that supports a near-field transducer (NFT) and a main magnetic pole formed of two layers. The first main pole layer has a cross-track width at the slider's gas-bearing surface (GBS) that tapers down in the direction towards the NFT where the optical spot is formed. The second main pole layer is located away from the NFT and has a substantially wider cross-track width than the first main pole layer so as to provide sufficient magnetic field for writing. Layers of heat sink material are located on the sloped cross-track sides of the tapered first main pole layer to reduce the temperature and thus the likelihood of oxidation of the main pole layers.

Abstract: There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.

Abstract: There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the metal phosphate contains at least aluminum as a metallic element, the organic resin has an SP value being within a range of 18.0 (MPa)0.5 or more to less than 24.0 (MPa)0.5, the water-soluble organic compound has an SP value being within a range of 19.0 (MPa)0.5 or more to less than 35.0 (MPa)0.5, and when measurement by X-ray diffractometry is performed on the insulating coating film, a degree of crystallinity of aluminum phosphate calculated from a peak from the metal phosphate is within a range of 0.5 to 5.0%.

Abstract: A heat-assisted magnetic recording (HAMR) head for recording data in data tracks of a HAMR disk has a gas-bearing slider that supports a near-field transducer (NFT) and a main magnetic pole formed of two layers. The first main pole layer has a cross-track width at the slider's gas-bearing surface (GBS) that tapers down in the direction towards the NFT where the optical spot is formed. The second main pole layer is located away from the NFT and has a substantially wider cross-track width than the first main pole layer so as to provide sufficient magnetic field for writing. Layers of heat sink material are located on the sloped cross-track sides of the tapered first main pole layer to reduce the temperature and thus the likelihood of oxidation of the main pole layers.

Abstract: An electric power unit includes: a rotary electric machine unit an electrical unit disposed above the rotary electric machine unit; and a cooling unit. The electrical unit includes a protrusion protruding outward from a left end portion of the rotary electric machine housing portion of the rotary electric machine in a left-right direction. The cooling unit includes: a cooling fan configured to generate cooling air by rotating integrally with a rotary shaft of the rotary electric machine; and an air guide unit configured to guide the cooling air. The air guide unit includes cooling air flow paths provided between the cooling fan and the electrical unit. The closer to the protrusion of the electrical unit a cooling air flow path is disposed, the larger opening area of the introduction port the cooling air flow path has.

Abstract: A semiconductor device includes a substrate, a first source finger, a first gate finger, a first drain finger, a second source finger, a second gate finger, a second drain finger, a first gate wiring, wherein a width of the first gate wiring in the extension direction at a first region where the first gate finger connects to the first gate wiring is smaller than a width of the first gate wiring in the extension direction at a second region located between the first source finger and the second source finger, and an end of the first region near the second gate finger in the extension direction is located closer to the second gate finger than an end of the second region near the second gate finger in the extension direction.

Abstract: A semiconductor device includes a substrate, a first source finger provided on the substrate, a first gate finger provided adjacent to the first source finger in a width direction of the first source finger, a second source finger having a width smaller than a width of the first source finger, a second gate finger provided adjacent to the second source finger in the width direction of the second source finger, a first source wiring connecting the first source finger to the second source finger, a first gate wiring sandwiching the second source finger between the first gate wiring and the second gate finger, a second gate wiring intersecting the first source wiring in a non-contact manner, and connecting the first gate wiring to the first gate finger, and a first drain finger sandwiching the first gate finger and the second gate finger between the first drain finger.

Abstract: According to one embodiment, a magnetic disk device includes a recording medium, a recording head including a main magnetic pole, a write shield magnetic pole, a coil, and a spin torque oscillator provided between the main magnetic pole and the write shield magnetic pole and a controller including a record current supply circuit and a drive current supply circuit. The controller executes a process of monitoring variation of a resistance value of the spin torque oscillator while increasing the record current in a state in which the spin torque oscillator is energized and detecting a record current value when the resistance value is increased most largely, and a process of setting the detected record current value to a lower limit of the record current supplied to the coil.

Abstract: According to one embodiment, a magnetic recording and reproducing device includes a perpendicular magnetic recording medium, a perpendicular magnetic recording head, a thermal assisted magnetic recording medium, and a thermal assisted magnetic recording head.

Abstract: A non-volatile memory circuit includes: a first memory including a plurality of cells that store values by respectively having elements whose states change physically due to application of a voltage from an exterior, a second memory including a plurality of cells that store values by respectively having the elements, a detector that, at a time of reading from the first memory, judges a value stored in each of the cells by comparing a threshold value and current values from the plurality of cells and a judging circuit supplying current of a predetermined current value to the detector as the threshold value.

Abstract: The present disclosure relates to pretreating a magnetic recording head for magnetic media drive. For a heat assisted magnetic recording (HAMR) head, a light source provides the necessary heat for the drive to operation. A vertical cavity surface emitting laser (VCSEL) is mounted to a top surface of a slider. A plurality of laser beams are emitted from the bottom surface of the VCSEL and directed to a corresponding number of waveguide structures within the HAMR head. The waveguide structures feed into a multimode interference (MMI) device that then directs the laser into a single waveguide for focusing on a near field transducer (NFT). The VCSEL lasers are phase coherent and have no mode hopping.

Abstract: The present invention is provided with: a command acquisition unit that acquires a command related to operation of electronic data; a remote control unit that establishes a remotely controllable communication path with an execution environment in which the operation of the electronic data is to be executed, and transmits an execution instruction for executing the operation of the electronic data on the execution environment to the execution environment via the remotely controllable communication path; a data transmission unit that transmits the electronic data or the electronic data converted based on a predetermined algorithm to the execution environment; an execution history storage unit that stores the electronic data or the electronic data converted based on the predetermined algorithm for a predetermined period; and a malware detection unit that scans the electronic data stored or the electronic data converted based on the predetermined algorithm in the execution history storing unit to detect malware.