Abstract: A vertical layer stack including a bit-line-level dielectric layer and an etch stop dielectric layer can be formed over an array region. Bit-line trenches are formed through the vertical layer stack. Bit-line-trench fill structures are formed in the bit-line trenches. Each of the bit-line-trench fill structures includes a stack of a bit line and a capping dielectric strip. At least one via-level dielectric layer can be formed over the vertical layer stack. A bit-line-contact via cavity can be formed through the at least one via-level dielectric layer and one of the capping dielectric strips. A bit-line-contact via structure formed in the bit-line-contact via cavity includes a stepped bottom surface including a top surface of one of the bit lines, a sidewall segment of the etch stop dielectric layer, and a segment of a top surface of the etch stop dielectric layer.

Abstract: A vehicle includes upper frames, lower frames, a front frame, a rear frame, a pair of front wheels, a pair of rear wheels, a bar handle to steer the pair of front wheels, a drive motor to drive the pair of rear wheels, a battery to supply electric power to the drive motor, and a straddled seat provided at a higher position than the drive motor. The drive motor and the battery are located in a region surrounded by the upper frames, the lower frames, the front frame, and the rear frame in a side view of the vehicle.

Abstract: A vehicle includes an upper frame, a lower frame, a front frame, a rear frame, a pair of rear wheels, a drive motor to drive the pair of rear wheels, a battery supported by the upper frame and the lower frame to supply electric power to the drive motor, a straddled seat at a higher position than the drive motor, and a bar handle at a higher position than the straddled seat. The battery includes a battery lower portion and a battery upper portion. The battery upper portion includes a projection that overhangs in at least a horizontal direction with respect to the battery lower portion. At least a portion of the drive motor is below or directly below the projection.

Abstract: A vehicle includes upper frames, lower frames, a front frame, a rear frame, a pair of rear wheels, a drive motor to drive the pair of rear wheels, a battery to supply electric power to the drive motor, an endless power transmission to connect the drive motor with the pair of rear wheels, a pivot shaft attached to the rear frame, a swing arm supported pivotably by the pivot shaft and supporting the pair of rear wheels, a straddled seat at a higher position than the drive motor, and a bar handle provided at a higher position than the straddled seat. The drive motor is located farther forward than the swing arm.

Abstract: An electric snowmobile that reduces a decrease in charging efficiency is provided. The electric snowmobile includes a body frame, a driver's seat supported by the body frame, an electric motor supported by the body frame, a right ski and a left ski supported by the body frame, a track mechanism including a track belt and supported by the body frame below the driver's seat, a battery that is charged with electric power supplied from an external power source and capable of supplying the electric power to the electric motor, and a battery heater H that can be driven by electric power supplied from an external power source and heats the battery.

Abstract: Provided are a diamond composite material which is excellent in thermal conductivity, suitable as a material for a heat radiating member, and dense, the heat radiating member, and a method for producing a diamond composite material that can productively produce a diamond composite material which is excellent in wettability between diamond and metal and dense. The diamond composite material includes: a coated diamond particle including a diamond particle and a carbide layer covering a surface of the diamond particle and including an element of group 4 of the periodic table; and silver or a silver alloy binding such coated diamond particles together, with an oxygen content of 0.1 mass % or less.