Abstract: A method for manufacturing a semiconductor device includes providing a semiconductor substrate comprising a low-density region and a high-density region, forming a first gate structure in the low-density region and a second gate structure in the high-density region, form an etch stop layer on the first and second gate structures, and forming an interlayer dielectric layer on the etch stop layer and on the semiconductor substrate. The method further includes performing a first chemical mechanical polishing (CMP) process on the etch stop layer to expose a surface of a portion of the etch stop layer disposed on the first gate structure, performing a second CMP process on the etch stop layer to expose a surface of a portion of the etch stop layer disposed on the second gate structure, and performing a third CMP process to completely remove the etch stop layer.

Abstract: A kitchen appliance has a base, a driven mechanism rotatable relative to the base, and an electric motor with a stator and a rotor for driving the driven mechanism. The stator comprises a stator core with two primary stator poles with stator windings wound there on and two auxiliary stator poles. The stator windings are configured in such a way that primary magnetic poles with the same polarity are formed at the primary poles and induced magnetic poles with the same polarity which is opposite to the polarity of the primary magnetic poles are formed at the auxiliary poles when the motor is electrified.

Abstract: A universal motor includes a wound rotor and a stator. The stator has stator windings and a stator code. The stator core has at least two poles with the stator windings wound thereon and a yoke connecting the poles. Each pole has a neck and a pole shoe forming a continuous pole arc facing the rotor. The ratio of the diameter of the motor to the width of the stator core measured across the poles is between 0.65˜0.95.

Abstract: A centrifugal impeller includes a cover, a base opposite the cover and a plurality of blades. The cover has an inlet. The plurality of blades surround the inlet and are arranged between and connect the cover and the base. Inlet edges of one end of the blades adjacent the center of the impeller define a cavity in communicate with the inlet. The dimension of the cavity gradually decreases along the direction from the cover towards the base.

Abstract: An electrical device includes an upper shell facing a user, a lower shell engaged with the upper shell to commonly define a mounting space, a mother board mounted in the mounting space, a receptacle portion and a rotating cover rotating about the receptacle portion. The upper shell defines a first opening for an insertion of a mating plug. The mother board defines a notch, wherein the receptacle portion is holding conductive terminals therein, the receptacle portion is assembled in the notch of the mother board and between the mother board and the upper shell. Wherein the lower shell defines a second opening, the rotating cover is received in the second opening and a front portion of the rotating cover is actuated in to the first opening of the receptacle portion.

Abstract: Embodiments of the present invention generally relate to optical mode conversion using intermodal Cherenkov radiation. More specifically, embodiments of the present invention relate to optical mode conversion utilizing intermodal four-wave mixing to convert light between modes for complex applications, whereby one of the four waves is generated from Cherenkov radiation. In one embodiment of the present invention, a fiber comprises an input end for receiving light in a first mode at a first wavelength, and an output end for outputting light in a desired second mode at a desired second wavelength; wherein the desired second mode is controlled deforming the fiber, such as by bending, during an intermodal Cherenkov radiation process.

Abstract: Embodiments of the present invention generally relate to optical mode conversion by nonlinear effects. More specifically, embodiments of the present invention relate to nonlinear mode conversion utilizing intermodal four-wave mixing to convert light between modes having different wavelengths for complex applications. In one embodiment of the present invention, a fiber comprises an input end for receiving light in a first mode at a first wavelength, and an output end for outputting light in a desired second mode at a desired second wavelength, wherein the first wavelength and the second wavelength are not the same. In many embodiments, the fiber comprises a higher-order mode fiber.

Abstract: Embodiments of the present invention generally relate to fiber designs for wavelength tunable ultra-short pulse lasers. More specifically, embodiments of the present invention relate to systems incorporating fiber designs for higher order mode fibers capable of soliton self frequency shifting where a system comprises a first fiber for shifting the wavelength from a pump wavelength to a transfer wavelength and a second fiber for shifting the pulse from the transfer wavelength to an output wavelength. In one embodiment of the present invention, a wavelength tunable short pulse fiber laser system comprises: a pulse generator for providing a pulse having an input wavelength; a mode-converter; a first designed fiber for shifting the pulse from the input wavelength to a transfer wavelength; and a second designed fiber for shifting the pulse from the transfer wavelength to an output wavelength.

Abstract: An electric motor has a rotor, a stator and brushes. The rotor has a shaft, a rotor core fixed to the shaft and having a plurality of teeth, a commutator fixed to the shaft adjacent the rotor core and having a plurality of segments, and rotor winding units wound about the teeth and connected to the commutator segments. Each of the rotor winding units is connected to a pair of adjacent commutator segments. At least one of the rotor winding units has at least two coils connected in series. Each coil has at least two subcoils directly connected in series and separated from each other by at least one tooth. An initial subcoil and a final subcoil of each coil are respectively connected to a pair of segments.

Abstract: An electric motor has a stator and a rotor magnetically coupled to the stator. The rotor has a shaft, a rotor core fixed to the shaft and having a plurality of teeth, a commutator fixed to the shaft adjacent the rotor core and having a plurality of segments, and rotor winding units wound about the teeth and connected to the segments. Brushes arranged in sliding electrical contact with the commutator transfer power to the rotor. Each of the rotor winding units has at least two subcoils directly connected in series to each other and separated from each other by at least one tooth. An initial subcoil and a final subcoil of each rotor winding unit are respectively directly connected to two adjacent segments.

Abstract: A universal motor includes a stator and a rotor rotatably installed in the stator. The stator includes a stator core having a yoke, n primary poles with windings wound thereon and n auxiliary poles. The primary poles and auxiliary poles are alternately arranged on the radially inner side of the yoke in a circumferential direction thereof. When the windings are electrified, n primary magnetic poles and n auxiliary magnetic poles are formed at the primary poles and auxiliary poles respectively, n being an integer greater than 1. All the primary magnetic poles have the same polarity and the polarity of each auxiliary magnetic poles is opposite the polarity of the primary magnetic poles.

Abstract: A motor has a stator and a rotor. The stator has 2P poles wherein P is an integer greater than one. The rotor has a shaft, a rotor core and a commutator fixed to the shaft. The commutator has m segments where m is an even integer greater than P. Every two adjacent segments are electrically connected by a winding unit so that the rotor winding comprises m winding units with at least one of the winding units comprising P coils connected in series; and each coil of each winding unit is directly connected to a corresponding two segments.

Abstract: An electrical device includes an upper shell facing a user, a lower shell engaged with the upper shell to commonly define a mounting space, a mother board mounted in the mounting space, a receptacle portion and a rotating cover rotating about the receptacle portion. The upper shell defines a first opening for an insertion of a mating plug. The mother board defines a notch, wherein the receptacle portion is holding conductive terminals therein, the receptacle portion is assembled in the notch of the mother board and between the mother board and the upper shell. Wherein the lower shell defines a second opening, the rotating cover is received in the second opening and a front portion of the rotating cover is actuated in to the first opening of the receptacle portion.

Abstract: A primary aluminum hydride cell and a battery formed with a plurality of the cells is described herein. The cells are constructed of an anode, a cathode and an aqueous electrolyte, and the anode comprises aluminum hydride and a conductive material. In some embodiments, the cathode comprises an air diffusion cathode.

Abstract: Apparatus for driving a nozzle of a bidet toilet, has a base 1; a nozzle 2; a guide device 11, 12 formed on the base for guiding linear movement of the nozzle; a motion output device 7 having an output shaft 71; a driving wheel 3 attached to the output shaft and being rotatably driven with the output shaft; a pair of guide wheels 4,5 rotatably fixed relative to the base, and a non-toothed conveyer 6 wound around the driving wheel 3 and the guide wheels 4, 5 and fastened to the nozzle 2. Rotation of the driving wheel 3 causes linear movement of the nozzle 2.

Abstract: The present invention provides a method for forming a refractory metal-intermetallic composite. The method includes providing a first powder comprising a refractory metal suitable for forming a metal phase; providing a second powder comprising a silicide precursor suitable for forming an intermetallic phase; blending the first powder and the second powder to form a powder blend; consolidating and mechanically deforming the powder blend at a first temperature; and reacting the powder blend at a second temperature to form the metal phase and the intermetallic phase of the refractory metal-intermetallic composite, wherein the second temperature is higher than the first temperature.

Abstract: A universal motor includes a wound rotor and a stator. The stator has stator windings and a stator core. The stator core has at least two poles with the stator windings wound thereon and a yoke connecting the poles. Each pole has a neck and a pole shoe forming a continuous pole arc facing the rotor. The ratio of the diameter of the rotor to the width of the stator core measured across the poles is between 0.65˜0.95.

Abstract: A food waste disposer has a housing 12 defining a grinding chamber 14 having an inlet 16 and an outlet 18. A grinding mechanism including a shredder ring 20 and a grinding disc 22, is disposed within the grinding chamber 14. A liner 21, preferably of a plastics material, extends from the shredder ring 20 to the inlet 16. The liner 21 reduces the noise generated by the disposer when in use.

Abstract: A kitchen appliance has a base, a driven mechanism rotatable relative to the base, and an electric motor with a stator and a rotor for driving the driven mechanism. The stator comprises a stator core with two primary stator poles with stator windings wound there on and two auxiliary stator poles. The stator windings are configured in such a way that primary magnetic poles with the same polarity are formed at the primary poles and induced magnetic poles with the same polarity which is opposite to the polarity of the primary magnetic poles are formed at the auxiliary poles when the motor is electrified.