Abstract: A light emitting device with on-chip optical power readout includes a light emitting mesa and a light detecting mesa formed adjacent to each other on the same substrate of a chip, and a portion of the light emitted from the light emitting mesa is transmitted to the light detecting mesa at least through the substrate. The light emitting mesa and the light detecting mesa have exactly the same epitaxial structure and can be electrically isolated from each other by an insulation layer, or an airgap formed therebetween, or by ion implantation. The light emitting mesa and the light detecting mesa can also share an n-type structure and a common n-electrode while having their own p-electrode, respectively.

Abstract: A hemispherical entrainment-type high-flow self-priming centrifugal pump includes a hemispherical entrainment system, a pump body and a pump inlet pipe. The hemispherical entrainment system is disposed above the pump body. The hemispherical entrainment system comprises four layers of entrainment cavities, including a spherical entrainment interior cavity, a primary entrainment cavity, a secondary entrainment cavity and a tertiary entrainment cavity. The spherical entrainment interior cavity is a double circular pipeline that ascends in a spiral overlapping manner to wrap a hemispherical surface, and improves the entrainment capacity, while increasing the entrainment area. The primary entrainment cavity is allowed to be in communication with the secondary entrainment cavity and the tertiary entrainment cavity by upward sliding of a sliding check core. The secondary entrainment cavity entrains the gas in the pump inlet pipe, and the primary entrainment cavity entrains the gas in a pump cavity.

Abstract: Heterostructures containing one or more sheets of positive charge, or alternately stacked AlGaN barriers and AlGaN wells with specified thickness are provided. Also provided are multiple quantum well structures and p-type contacts. The heterostructures, the multiple quantum well structures and the p-type contacts can be used in light emitting devices and photodetectors.

Abstract: The present invention relates to mobile devices for disinfecting an object. The mobile device includes: one or more light sources for generating a disinfection light; a display; one or more processors coupled to the one or more light sources and display; and a non-transitory computer-readable medium comprising one or more sequences of instructions which, when executed by the one or more processors, causes steps to be performed including: determining a required dosage of the disinfection light; determining an exposure time of the disinfection light that corresponds to the required dosage of the disinfection light; illuminating the disinfection light on the surface; and displaying a disinfection map on the display to report a result of a disinfection process performed by the illumination of the disinfection light.

Abstract: Heterostructures containing one or more sheets of positive charge, or alternately stacked AlGaN barriers and AlGaN wells with specified thickness are provided. Also provided are multiple quantum well structures and p-type contacts. The heterostructures, the multiple quantum well structures and the p-type contacts can be used in light emitting devices and photodetectors.

Abstract: Heterostructures containing one or more sheets of positive charge, or alternately stacked AlGaN barriers and AlGaN wells with specified thickness are provided. Also provided are multiple quantum well structures and p-type contacts. The heterostructures, the multiple quantum well structures and the p-type contacts can be used in light emitting devices and photodetectors.

Abstract: Heterostructures containing one or more sheets of positive charge, or alternately stacked AlGaN barriers and AlGaN wells with specified thickness are provided. Also provided are multiple quantum well structures and p-type contacts. The heterostructures, the multiple quantum well structures and the p-type contacts can be used in light emitting devices and photodetectors.

Abstract: Heterostructures containing one or more sheets of positive charge, or alternately stacked AlGaN barriers and AlGaN wells with specified thickness are provided. Also provided are multiple quantum well structures and p-type contacts. The heterostructures, the multiple quantum well structures and the p-type contacts can be used in light emitting devices and photodetectors.

Abstract: A device for cleaning a contact lens includes a lid, a base portion and a drawer unit detachably coupled to the base portion. The drawer unit includes a container holding a volume of fluid therein. The device also includes a vibration generator for generating an oscillatory motion on the container, where the oscillatory motion induces turbulence in the fluid with sufficient force to dislodge deposits from a lens immersed in the fluid. The device also includes a circuit board secured to the base portion and a light source for generating radiation to disinfect the dislodged deposits in the fluid. A suspension secures the light source to the circuit board and a resonance frequency of the suspension is offset from a frequency of the oscillatory motion.

Abstract: A light emitting device includes an n-type AlGaN structure, a p-type AlGaN structure, and a light-emitting active-region sandwiched between the n-type AlGaN structure and the p-type AlGaN structure. A first p-contact is formed on the p-type AlGaN structure defining a light-emitting structure, a second p-contact is formed on the p-type AlGaN structure defining a light-detecting structure, and an n-contact is formed on the n-type AlGaN structure serving as a common cathode for the light-emitting structure and the light-detecting structure. There is a bridge zone between the first and the second p-contacts and the p-type AlGaN structure in the bridge zone is not removed.

Abstract: A disinfection device includes: a container having a wall that defines a chamber for containing liquid therein; and a light source for transmitting disinfection light to the liquid. The light source is in a spatial relationship with the container so that a distance between the light source and the first light receiving surface of the liquid remains unchanged regardless of a volume of the liquid.

Abstract: A method for disinfecting a fluid includes emitting UV light into a flowing fluid pillar along its axial direction. The flowing fluid pillar is surrounded by and in contact with a fluid medium having a refractive index lower than that of the fluid to be disinfected so that total internal reflection occurs when the UV light travels within the flowing fluid pillar. Also provided is a UV disinfector for disinfecting a flowing fluid.

Abstract: A light-emitting device includes an n-semiconductor structure, a p-semiconductor structure and a light-emitting active-region sandwiched therebetween. An n-trough is formed to expose the n-semiconductor structure by removing a first portion of the p-semiconductor structure and the light-emitting active-region. The n-trough surrounds a p-mesa which contains a second portion of the n-semiconductor structure, the p-semiconductor structure and the light-emitting active-region. The n-trough and the p-mesa are path-connected spaces and are formed via lithography and etching using a lithographic mask which is topologically constructed via merging a unit cell's at least two transformations selected from the unit cell's translation, rotation, and reflection transformations.

Abstract: Example methods and apparatus to access process data stored on a server are described herein. An example method includes receiving a request to access process data via a web browser, identifying a server that stores at least a portion of the process data, wherein the server is associated with an interoperability data packing format, accessing the server to receive the process data, converting the process data from a format associated with the interoperability data packing format to a web browsing format, and embedding at least a first portion of the converted process data into at least one data field for display via the web browser.

Abstract: A light emitting device with on-chip optical power readout includes a light emitting mesa and a light detecting mesa formed adjacent to each other on the same substrate of a chip, and a portion of the light emitted from the light emitting mesa is transmitted to the light detecting mesa at least through the substrate. The light emitting mesa and the light detecting mesa have exactly the same epitaxial structure and can be electrically isolated from each other by an insulation layer, or an airgap formed therebetween, or by ion implantation. The light emitting mesa and the light detecting mesa can also share an n-type structure and a common n-electrode while having their own p-electrode, respectively.

Abstract: A phase change memory and a fabrication method are provided. The fabrication method includes: providing a substrate; forming a heating layer on the substrate; forming a phase change layer on and in contact with one sidewall surface of the heating layer. The phase change memory includes: a substrate; a heating layer on the substrate; and a phase change layer on and in contact with one sidewall surface of the heating layer.

Abstract: A method for fabricating a semiconductor structure is disclosed. The method includes providing a substrate and forming a plurality of fin structures on the substrate. Each fin structure includes a first side and a second side opposite to the first side. The method further includes forming a first doped region containing first doping ions in a portion of the substrate on the first side of each gate structure, and forming a second doped region containing second doping ions in a portion of the substrate on the second side of each gate structure. The ion concentration of the second doping ions in the second doped region is smaller than the ion concentration of the first doping ions in the first doped region, and the atomic weight of the second doping ions is smaller than the atomic weight of the first doping ions.

Abstract: A method for disinfecting a fluid includes emitting UV light into a flowing fluid pillar along its axial direction. The flowing fluid pillar is surrounded by and in contact with a fluid medium having a refractive index lower than that of the fluid to be disinfected so that total internal reflection occurs when the UV light travels within the flowing fluid pillar. Also provided is a UV disinfector for disinfecting a flowing fluid.

Abstract: The invention relates to UV light modules that generate UV light. The UV light module includes: a substrate; a light source mounted on a top surface of the substrate, the light source generates output light; a detector mounted on the top surface of the substrate, the detector detects light incident thereon; and a lens disposed over the light source and the detector. The lens includes a surface on which a portion of the output light is internally reflected and the portion of the output light travels through the lens to the detector.

Abstract: A breathing apparatus according to embodiments of the invention includes a facemask portion sized to cover a lower portion of a wearer's face. The facemask portion includes a flow chamber. The flow chamber includes a first opening disposed near a first end of the flow chamber, a second opening disposed near a second end of the flow chamber, and a serpentine passage disposed between the first opening and the second opening. At least one light emitting diode configured to emit light having a peak wavelength in the ultraviolet range is disposed in the serpentine passage. The at least one light emitting diode is disposed off center relative to a centerline oriented along a direction of air flow through the serpentine passage.