Abstract:
Fabrication methods for nano-scale chalcopyritic powders and polymeric thin-film solar cells are presented. The fabrication method for nano-scale chalcopyritic powders includes providing a solution consisting of group IB, IIIA, VIA elements on the chemistry periodic table or combinations thereof. The solution is heated by a microwave generator. The solution is washed and filtered by a washing agent. The solution is subsequently dried, thereby acquiring nano-scale chalcopyritic powders.
Abstract:
A Universal Serial Bus data transport method and its device is disclosed. Data transport is performed through a high-speed transport technique based on a Universal Serial Bus, which consists of Universal Serial Bus protocol for communication between the device and the host, and SCSI protocol for interaction between the device and the upper driver layer. A data transport device using the Universal Serial Bus thus uses the embedded driver inside the operating system, which may be self-loaded/self-initialized, and have high data transport speed, and convenient to use.
Abstract:
A bulk-doped semiconductor may be at least one of the following: a single crystal, an elongated and bulk-doped semiconductor that at any point along its longitudinal axis, has a largest cross-sectional dimension less than 500 nanometers, and a free-standing and bulk-doped semiconductor with at least one portion having a smallest width of less than 500 nanometers. At least one portion of such a semiconductor may have a smallest width of less than 200 nanometers, or less than 150 nanometers, or less than 100 nanometers, or less than 80 nanometers, or less than 70 nanometers, or less than 60 nanometers, or less than 40 nanometers, or less than 20 nanometers, or less than 10 nanometers, or even less than 5 nanometers. Such a semiconductor may be doped during growth. Such a semiconductor may be part of a device, which may include any of a variety of devices and combinations thereof.
Abstract:
Processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol.
Abstract:
A protection mechanism in accordance with a preferred embodiment of the present invention includes a bracket for being secured to a rear portion of a computer chassis, and first and second covers respectively pivotally attached to the bracket. Adjacent sides of the first and second covers each form a lug. The lug of the first cover abuts against the lug of the second cover so as to prevent the second cover from rotating.
Abstract:
An asymmetric twin waveguide (ATG) structure with quantum-well intermixing in the taper region of the active waveguide is disclosed. The structure comprises a first waveguide, a second waveguide, and a taper formed in the second waveguide. The taper has an intermixed area formed therein comprising a plurality of quantum wells intermixed with a plurality of barriers. The quantum wells and barriers may be intermixed using plasma-enhanced intermixing such as, for example, Argon plasma enhanced intermixing. Quantum-well intermixing reduces absorption loss normally encountered in the movement of light between waveguides.
Abstract:
A bulk-doped semiconductor that is at least one of the following: a single crystal, an elongated and bulk-doped semiconductor that, at any point along its longitudinal axis, has a largest cross-sectional dimension less than 500 nanometers, and a free-standing and bulk-doped semiconductor with at least one portion having a smallest width of less than 500 nanometers. Such a semiconductor may comprise an interior core comprising a first semiconductor; and an exterior shell comprising a different material than the first semiconductor. Such a semiconductor may be elongated and may have, at any point along a longitudinal section of such a semiconductor, a ratio of the length of the section to a longest width is greater than 4:1, or greater than 10:1, or greater than 100:1, or even greater than 1000:1. At least one portion of such a semiconductor may a smallest width of less than 200 nanometers, or less than 150 nanometers, or less than 100 nanometers, or less than 80 nanometers, or less than 70 nanometers, or less than 60 nanometers, or less than 40 nanometers, or less than 20 nanometers, or less than 10 nanometers, or even less than 5 nanometers. Such a semiconductor may be a single crystal and may be free-standing. Such a semiconductor may be either lightly n-doped, heavily n-doped, lightly p-doped or heavily p-doped. Such a semiconductor may be doped during growth. Such a semiconductor may be part of a device, which may include any of a variety of devices and combinations thereof, and a variety of assembling techniques may be used to fabricate devices from such a semiconductor. Two or more of such a semiconductors, including an array of such semiconductors, may be combined to form devices, for example, to form a crossed p-n junction of a device. Such devices at certain sizes may exhibit quantum confinement and other quantum phenomena, and the wavelength of light emitted from one or more of such semiconductors may be controlled by selecting a width of such semiconductors. Such semiconductors and device made therefrom may be used for a variety of applications.
Abstract:
A Universal Serial Bus data transport method and its device is disclosed. Data transport is performed through a high-speed transport technique based on a Universal Serial Bus, which consists of Universal Serial Bus protocol for communication between the device and the host, and SCSI protocol for interaction between the device and the upper driver layer. A data transport device using the Universal Serial Bus thus uses the embedded driver inside the operating system, which may be self-loaded/self-initialized, and have high data transport speed, and convenient to use.
Abstract:
An electronic assembly includes a PCB (20), a socket (22) mounted on the PCB, a CPU (24) connected with the socket, a heat sink (10) in thermal contact with the CPU, a foldable back plate (30) attached to an underside of the PCB and a base plane (40) forming four bridges (42). The back plate includes a first piece section (32) and a second piece section (34) pivotally joined together by a pivot (36). The first and the second piece sections each comprise two legs inserted into two corresponding bridges. Screws are used to extend through the heat sink, the PCB, the bridges to threadedly engage with the legs of the back plate, respectively. The pivot is located under a part of the PCB at which the CPU is mounted.
Abstract:
The present invention relates generally to sub-microelectronic circuitry, and more particularly to nanometer-scale articles, including nanoscale wires which can be selectively doped at various locations and at various levels. In some cases, the articles may be single crystals. The nanoscale wires can be doped, for example, differentially along their length, or radially, and either in terms of identity of dopant, concentration of dopant, or both. This may be used to provide both n-type and p-type conductivity in a single item, or in different items in close proximity to each other, such as in a crossbar array. The fabrication and growth of such articles is described, and the arrangement of such articles to fabricate electronic, optoelectronic, or spintronic devices and components. For example, semiconductor materials can be doped to form n-type and p-type semiconductor regions for making a variety of devices such as field effect transistors, bipolar transistors, complementary inverters, tunnel diodes, light emitting diodes, sensors, and the like.