Abstract:
A semiconductor structure includes a substrate and a conductive carrier-tunneling layer over and contacting the substrate. The conductive carrier-tunneling layer includes first group-III nitride (III-nitride) layers having a first bandgap, wherein the first III-nitride layers have a thickness less than about 5 nm; and second III-nitride layers having a second bandgap lower than the first bandgap, wherein the first III-nitride layers and the second III-nitride layers are stacked in an alternating pattern. The semiconductor structure is free from a III-nitride layer between the substrate and the conductive carrier-tunneling layer. The semiconductor structure further includes an active layer over the conductive carrier-tunneling layer.
Abstract:
The package substrates with through silicon plugs (or vias) described above provide lateral and vertical heat dissipation pathways for semiconductor chips that require thermal management. Designs of through silicon plugs (TSPs) with high duty ratios can most effectively provide heat dissipation. TSP designs with patterns of double-sided combs can provide high duty ratios, such as equal to or greater than 50%. Package substrates with high duty ratios are useful for semiconductor chips that generate large amount of heat. An example of such semiconductor chip is a light-emitting diode (LED) chip.
Abstract:
In one embodiment, the present invention is a method for performing incremental preamble detection in a wireless communication network. The method processes non-overlapping chunks of incoming antenna data, where each chunk is smaller than the preamble length, to detect the signature of the transmitted preamble. For each chunk processed, chips of the chunk are correlated with possible signatures employed by the wireless network to update a set of correlation profiles, each profile comprising a plurality of profile values. Further, an intermediate detection is performed by comparing the updated profile values to an intermediate threshold that is also updated for each chunk. Upon receiving the final chunk, the correlation profiles are updated, and a final preamble detection is made by comparing the updated profile values to a final threshold. Detections are performed on an incremental basis to meet latency requirements of the wireless network.
Abstract:
A method of forming a semiconductor structure includes providing a substrate; forming a buffer/nucleation layer over the substrate; forming a group-III nitride (III-nitride) layer over the buffer/nucleation layer; and subjecting the III-nitride layer to a nitridation. The step of forming the III-nitride layer comprises metal organic chemical vapor deposition.
Abstract:
A biotechnology detection device with optical fibers comprises a first optical fiber connected to a light source, and a prism having a first surface and a second surface. The first surface is connected to the first optical fiber and coated with an anti-reflective layer to be passed through by short-wavelength light; a second optical fiber connected to the second surface of the prism. The end of the second optical fiber is to be coated with test sample blended with a fluorescent agent, wherein the fluorescent agent emits long-wavelength light after being excited by short-wavelength light. The second prism surface is coated with a high reflective layer to reflect part of the long-wavelength light. A third optical fiber is connected to the second prism surface to convey part of the long-wavelength light. A detector is connected to the third optical fiber for detecting part of the long-wavelength light.
Abstract:
A motion guide device includes an elongated shaft having a groove formed on an outer peripheral surface, a movable member attached onto the shaft and having a bore for receiving the shaft, a housing attached to the movable member and having a space for receiving a lubricating oil, the housing includes a passage communicative with the bore and the space of the housing for allowing the lubricating oil to flow from the space into the groove of the shaft, and an oil applying member is rotatably engaged in the passage of the housing to carry and to apply or distribute the lubricating oil through the passage of the housing and then into the groove of the elongated shaft.
Abstract:
A first aid backpack including a backpack body, a first storage bag, a second storage bag, a sealed first-aid box, a third storage bag, and solar re-charging device is disclosed. The backpack body has a top side adapted to be in connection with the first storage bag, a surface connected with the second storage bag, and a lateral side connected with the third storage bag. The first storage bag has an affixing part having a first solar plate and a movable part having a second solar plate. The movable part is connected to the affixing part. The third storage bag is for storing the solar re-charging device, which is coupled to the first solar plate and the second solar plate for receiving an electricity voltage.
Abstract:
An impact-protecting structure includes a rigid body, a soft body, an adhesive layer, and a plurality of illuminating particles. The rigid body has a corner portion and a plurality of side extending portions extended from the corner portion. The soft body has an impact-resistant portion and a plurality of side covering portions extended from the impact-resistant portion. The soft body covers the outer surface of the rigid body. The adhesive layer is affixed onto the inner surface of the rigid body. The illuminating particles are disposed within the soft body. The impact-protecting structure offers warning capability and buffering effect against impact.
Abstract:
The invention provides an antivirus network or Internet appliance and methods therefor. A preferred embodiment of the Internet appliance according to the invention comprises an interface connecting the Internet appliance to a terminal, a memory, and a network connection connecting the Internet appliance to a network (such as a wide area network (WAN) or the Internet) wherein data in the network are operable with a corresponding network protocol (such as TCP/IP). Protocol-level programs are stored in the memory for receiving data being transmitted from the network to the terminal through the Internet appliance wherein the protocol-level programs are compatibly operable with the network protocol. Application-level antivirus programs are stored in the memory for detecting computer viruses in the received data serving as a firewall against the detected computer viruses for the terminal. The Internet appliance according to this particular embodiment of the invention further includes a processor (such as a central processor unit or CPU) and an operating system for implementing the protocol-level programs and the antivirus programs, wherein the antivirus programs are advantageously transparent to the terminal.
Abstract:
A phase-change turbo-dissipation cooler comprises a heat extracting apparatus and a heat dissipating apparatus. The heat extracting apparatus includes a closed container having an outlet nozzle and an inlet, the closed container being filled with a liquid of low boiling point. The heat dissipating apparatus includes a chambered body, an air supply tube, a vapor tube, and a condensing tube. The chambered body is provided with a common shaft, a turbine, and a blower. The condensing tube is provided with multiple fins and an expansion valve and connected between the vapor tube and the closed container. The liquid can be vaporized in the closed container by a heat source to blow into the chambered body to rotate the turbine together with the blower and then flow back to the closed container. The blower can suck in ambient air to blow through the fins on the condensing tube to dissipate heat.