Abstract: Various embodiments of the present disclosure are directed towards a method for forming a semiconductor structure, the method includes forming a buffer layer over a substrate. An active layer is formed on the buffer layer. A top electrode is formed on the active layer. An etch process is performed on the buffer layer and the substrate to define a plurality of pillar structures. The plurality of pillar structures include a first pillar structure laterally offset from a second pillar structure. At least portions of the first and second pillar structures are spaced laterally between sidewalls of the top electrode.

Abstract: A motor with an internal driver having a shell, having a stator, a rotor and a drive shaft attached to said rotor in an internal thereof; a front cover; a rear cover; ends of a drive shaft penetrating through holes of the front and rear covers to the external. The inner surface of the rear cover includes outer and inner circumferential walls and a receiving space defined by the outer and inner circumferential walls and the inner surface of the rear cover. A driver is provided within said receiving space and the outer surface of the rear cover is provided with a bearing slot to receive a bearing. An inner diameter of the inner circumferential wall is greater than the drive shaft. Said inner diameter of said inner circumferential wall is smaller than the annular diameter of the bearing in the bearing slot.

Abstract: A chamfering machine for both handheld and stationary use includes: a base having two arms extending toward one side; a motor provided on the base and having a driving shaft; a cutter provided on the driving shaft; a cutting seat consisting essentially of first and second panels; a first handle located between the arms and having two ends respectively provided at the arms; a second handle having one end provided at a bottom portion of the base and a body portion extending in a direction opposite the direction in which the arms extend; and at least one fixing element located below and connected to the arms and having a bottom end lower than the bottom end of the base, wherein the bottom end of the at least one fixing element has at least one connecting portion with at least one fixing hole for connecting to a tabletop.

Abstract: The present invention provides a motor with an internal driver comprising: a shell, having a stator, a rotor and a drive shaft attached to said rotor in an internal thereof; a front cover; a rear cover; ends of a drive shaft penetrating through holes of the front and rear covers respectively to the external. The inner surface of rear cover comprises outer and inner circumferential walls and a receiving space is defined by the outer and inner circumferential walls and inner surface of the rear cover. A driver is provided within said receiving space and the outer surface of rear cover is provided with a bearing slot to receive a bearing. An inner diameter of the inner circumferential wall is greater than the drive shaft; and said inner diameter of said inner circumferential wall is smaller than the annular diameter of the bearing in the bearing slot.

Abstract: An electric motor rotor includes a core member having a plurality of locating grooves spaced around the periphery thereof and outer rotation-stopping portions, and a magnetic unit arranged around the periphery of the core member and defining a plurality of magnetic zones corresponding to the space between each two adjacent locating grooves. The magnetic unit can be a magnetic barrel having inner rotation-stopping portions for abutting against the outer rotation-stopping portions of the core member. Alternatively, the magnetic unit can be made comprising a plurality of magnets to form the multiple magnetic zones and a hoop for attaching to the magnets to secure the magnets to the periphery of the core member. Using the core member with the said two magnetic units can make two different rotors that have the common advantages of quick assembly, accurate alignment of magnetic zones and cost-effectiveness.

Abstract: A bicycle brake device includes a brake shoe, a warning device installed in the brake shoe, a power supply device electrically connected with the warning device, and two conductors separately mounted in the brake shoe and respectively electrically connected with the warning device and the power supply device. Each conductor has one end thereof exposed to the outside of the brake shoe for touching the wheel rim or brake disc of the bicycle upon a brake operation to close the circuit, causing the warning device to generate a warning signal.

Abstract: A chamfering machine for both handheld and stationary use includes: a base having two arms extending toward one side; a motor provided on the base and having a driving shaft; a cutter provided on the driving shaft; a cutting seat consisting essentially of first and second panels; a first handle located between the arms and having two ends respectively provided at the arms; a second handle having one end provided at a bottom portion of the base and a body portion extending in a direction opposite the direction in which the arms extend; and at least one fixing element located below and connected to the arms and having a bottom end lower than the bottom end of the base, wherein the bottom end of the at least one fixing element has at least one connecting portion with at least one fixing hole for connecting to a tabletop.

Abstract: A bicycle brake device includes a brake shoe, a warning device installed in the brake shoe, a power supply device electrically connected with the warning device, and two conductors separately mounted in the brake shoe and respectively electrically connected with the warning device and the power supply device. Each conductor has one end thereof exposed to the outside of the brake shoe for touching the wheel rim or brake disc of the bicycle upon a brake operation to close the circuit, causing the warning device to generate a warning signal.

Abstract: An electric motor rotor includes a core member having a plurality of locating grooves spaced around the periphery thereof and outer rotation-stopping portions, and a magnetic unit arranged around the periphery of the core member and defining a plurality of magnetic zones corresponding to the space between each two adjacent locating grooves. The magnetic unit can be a magnetic barrel having inner rotation-stopping portions for abutting against the outer rotation-stopping portions of the core member. Alternatively, the magnetic unit can be made comprising a plurality of magnets to form the multiple magnetic zones and a hoop for attaching to the magnets to secure the magnets to the periphery of the core member. Using the core member with the said two magnetic units can make two different rotors that have the common advantages of quick assembly, accurate alignment of magnetic zones and cost-effectiveness.

Abstract: A housing of a motor includes a barrel having fins on an outer surface thereof and stands on a bottom of the outer surface for mounting the motor onto a predetermined plane horizontally. A rear lid is mounted at a rear end of the barrel and has an axle hole at a center thereof. A front lid is mounted at a front end of the barrel and ahs an axle hole at a center thereof. And, a front disk that has a diameter greater than that of the barrel is detachably fastened to the front lid. The front disk is provided with fastening holes for mounting the motor onto a predetermined plane vertically.

Abstract: A housing of a motor includes a barrel having fins on an outer surface thereof and stands on a bottom of the outer surface for mounting the motor onto a predetermined plane horizontally. A rear lid is mounted at a rear end of the barrel and has an axle hole at a center thereof. A front lid is mounted at a front end of the barrel and ahs an axle hole at a center thereof. And, a front disk that has a diameter greater than that of the barrel is detachably fastened to the front lid. The front disk is provided with fastening holes for mounting the motor onto a predetermined plane vertically.