Abstract: A light source apparatus (8) includes a rear plate (80), a front plate formed with an anode layer (82), and a cathode (81) interposed therebetween. The cathode includes a plurality of electrically conductive carriers (812) and a plurality of field emitters (816) formed thereon. The field emitters are uniformly distributed on anode-facing surfaces of the conductive carriers. Preferably, the field emitters extend radially outwardly from the corresponding conductive carriers. The conductive carriers are parallel with each other, and are located substantially on a common plane. Each of the conductive carriers can be connected with a pulling device arranged at least one end thereof, and an example of the pulling device is a spring. The conductive carriers may be cylindrical, prism-shaped or polyhedral.

Abstract: A computer enclosure includes a chassis (10) and a carrying bracket (30,50) received in the chassis (10). The chassis (10) includes a bottom wall (11) and a rear wall (13) defining an opening (133). The carrying bracket (30,50) includes a base wall (31,51) mounted on the bottom wall (11) of the chassis (10) and a side wall (33,53) perpendicular to the base wall (31,51). The side wall (33,53) of the carrying bracket (30,50) is coupled to the opening (133) of the chassis (10). When users need to replace their motherboard with another type it is easy do so merely by replacing the carrying bracket with the appropriate one for the new motherboard, rather than replacing the whole computer enclosure.

Abstract: A field emission device (10) includes a sealed container (11) with a light-permeable portion (12). A phosphor layer (13) is formed on the light-permeable portion. A light-permeable anode (14) is formed on the light-permeable portion. At least one cathode is positioned opposite to the light-permeable anode. A shielding barrel (16) is electrically connected to the at least one cathode and disposed in the container. The shielding barrel has opposite open ends respectively facing towards the light-permeable anode and the cathode (18, 19). The shielding barrel has an inner surface, and a slurry layer (17) containing conductive nano material is formed on the inner surface of the shielding barrel.

Abstract: A liquid crystal display includes a first base plate, a second base plate, a first alignment film, a second alignment film and a liquid crystal layer. The first base plate and the second base plate separately have an inner surface and the second base plate is located with its inner surface opposite to the inner surface of the first base plate. The first alignment film is arranged on the inner surface of the first base plate and comprises a plurality of juxtaposed one-dimensional nanostructures oriented in a first direction. Wherein the one-dimensional nanostructures cooperatively function as at least one of a first polarizer and a first transparent electrode. The second alignment film is arranged on the inner surface of the second base plate, and the liquid crystal layer is sandwiched between the first alignment film and the second alignment film.

Abstract: A liquid crystal display (200) includes a first base plate (202), a second base plate (220), a liquid crystal layer (238) located between the first base plate and the second base plate, and two alignment films (210, 228). The two alignment films are respectively positioned on inner surfaces of the first base plate and the second base plate. Each alignment film is a film of oriented carbon nanotubes (212, 230). An oriented direction of the carbon nanotubes on the first base plate is perpendicular to that of the carbon nanotubes on the second base plate. A manufacturing method for the liquid crystal display is also disclosed.

Abstract: A method for burning MAC address is used to burn a MAC address into a network card in the course of making a network card. The method includes the following steps: Stores a plurality of MAC addresses in a burning platform. The burning platform sends a MAC address to a burning device, and then burns the MAC address to a network card through the burning device. When the burning process finishes, the burning platform reads the contents of the network card, and compares the reading contents to the burning contents. If the result is correct, the burning platform sends the MAC address and a serial number of the network card to a server, and compares them to serial numbers and MAC addresses being stored in the server to prevent the MAC address being reused.

Abstract: A personal data assistant (PDA) carrying case includes a main body (10), an expansion cover (40) having a first clasp (46) extending therefrom, a resilient clip (22) mounted on the main body, and a button (29). An opening (33) is defined in the main body for matching the expansion cover. A locking edge (36) is formed for engaging with the first clasp. A through hole (24) is defined in main body corresponding to the first clasp. The resilient clip has a projecting portion (222) corresponding to the through hole. The resilient clip deforms elastically to have the projecting portion pressing the button, so that the button drives the first clasp to disengage the first clasp from the locking edge of the main body.

Abstract: A method for manufacturing isotope-doped carbon nanotubes (10) includes the steps of: (a) providing a carbon rod (209) connected with an anode (214) of an electrical source, the carbon rod including at least two kinds of carbon isotope segments (202, 203) arranged therealong according to need; (b) providing a pure carbon rod (208) connected with a cathode (215) of the electrical source, the pure carbon rod positioned corresponding to the carbon rod and including carbon-12 isotopes; and (c) producing an arc discharge between the carbon rod and the pure carbon rod, wherein the carbon isotope segments of the carbon rod are consumed sequentially to form the isotope-doped carbon nanotubes on a surface of the pure carbon rod. Growth mechanisms of the isotope-doped carbon nanotubes manufactured by this method can be readily studied.

Abstract: A carbon nanotube array (10) includes a plurality of carbon nanotubes (14) aligned in a uniform direction. Each carbon nanotube has at least one line mark (16) formed thereon. A method for manufacturing the described carbon nanotube array includes the following steps: (a) providing a substrate (12); (b) forming a catalyst layer on the substrate; (c) heating the substrate to a predetermined temperature; and (d) intermittently introducing/providing and then interrupting a reaction gas proximate the substrate to grow a patterned carbon nanotube array, each carbon nanotube having at least one line mark formed thereon as a result of the patterned growth.

Abstract: A method for manufacturing carbon nanotubes with a uniform length includes the steps of: (a) forming an array of carbon nanotubes on a substrate; (b) submerging the carbon nanotubes in liquid macromolecular material; (c) solidifying the liquid macromolecular material; (d) cutting the solidified liquid macromolecular material; and (e) removing the macromolecular material to obtain the carbon nanotubes with a uniform length. The method is simple, and carbon nanotubes with a desired length can be easily obtained. The length of the carbon nanotubes can be precisely controlled. Furthermore, each carbon nanotube is open at both ends thereof.

Abstract: A method for measuring a growth rate of a carbon nanotube includes the following steps: (a) providing a substrate (12); (b) forming a catalyst layer on the substrate; (c) heating the substrate to a predetermined temperature; (d) intermittently introducing/providing and then interrupting a reaction gas proximate the substrate to grow a patterned carbon nanotube array, each carbon nanotube having at least one line mark formed thereon as a result of the patterned growth; and (e) calculating the growth rate which is equal to a length between a pair of line marks divided by a time interval between said two line marks.

Abstract: A standing apparatus for mounting electrical components to a base plate (10), the standing apparatus includes the base plate, a standing member (20), and a clamping member (30). The base plate defines a recess (12) in a first face, and a hole (14) extends through the recess to a second face opposite to the first face. The standing member includes a positioning collar (22) and a standing pillar (24). The standing pillar has a groove (242). The clamping member includes a base portion (32) and a domelike portion (34), the domelike portion has a plurality of spring clips (36), the spring clips encircling the standing pillar and received in the groove of the standing member for retaining the standing member to the base plate.

Abstract: A double-faced light emitting diode display includes a pair of parallel shield panels (20, 20?), and a light emitting module (30) located between the shield panels. Each shield panel includes a video contrast enhancement assembly. The light emitting module includes an opaque insulative substrate (31) with a pair of pixel matrixes symmetrically formed on opposite surfaces (310, 310?) thereof and a circuit driving system formed at at least one of the surfaces. Each pixel matrix includes a plurality of pixel units (320, 320?). Symmetrically opposite pairs of pixel units are electrically interconnected so that the shield panels can simultaneously display same images. The double-faced light emitting diode display has a simple structure, a small size, low cost and full color display capability, and can be advantageously applied in traffic signal boards, large-scale display boards, surround cinemas and so on.

Abstract: An ion source element includes a cold cathode, a grid electrode, and an ion accelerator. The cold cathode, the grid electrode, and the ion accelerator are arranged in that order and are electrically separated from one another. A space between the cold cathode and the grid electrode is essentially smaller than a mean free path of electrons at an operating pressure. The ion source element is thus stable and suitable for various applications.

Abstract: A ferroelectric film includes a plurality of ferroelectric nanodomains configured in a regularly staggered fashion. The ferroelectric film has a quasi 2-dimensional configuration and is comprised of a ferroelectric material. A method for forming a ferroelectric film is also provided. A ferroelectric film comprised of a ferroelectric material is prepared. The ferroelectric film has a quasi 2-dimensional configuration and defines a direction that is normal to the quasi 2-dimensional configuration. An electric field along the normal direction is applied to the ferroelectric film, thereby the ferroelectric film having an array of ferroelectric nanodomains configured in a regularly staggered fashion is obtained.

Abstract: A field emission device includes a transparent anode substrate, an anode, a cathode substrate, a cathode, and a fluorescent layer. The anode is formed on the anode substrate. The cathode is formed on the cathode substrate. The cathode faces toward the anode and is spaced therefrom at a predetermined distance. The fluorescent layer is formed on the cathode and faces toward the anode. A method for manufacturing the field emission device is also disclosed.

Abstract: A micro displacement sensor includes a first photonic crystal module, a second photonic crystal module, a light source and a detector. The first photonic crystal module includes a first substrate and a plurality of first photonic crystals, disposed on the first substrate and are arranged in a matrix. The first photonic crystals define a first light-guide channel having a light input end and a light output end. The second photonic crystal module includes a second substrate, disposed parallel to the first substrate, and a plurality of second photonic crystals, disposed on the second substrate and are arranged in a matrix. The second photonic crystals define a second light-guide channel having a light coupling end and a light detected end. The light source is disposed adjacent to the light input end. The detector is disposed adjacent to the light detected end.

Abstract: A PDA carrying device includes a base body (20), a front panel (10) and rear cover (30). The base body is used to hold a PDA. The front panel is pivotably attached to the base body. The rear cover is mounted on the base body. The base body has a plurality of hermetic flanges engaging with the front panel and the rear cover respectively.

Abstract: An exemplary charger control circuit includes an input port having a positive terminal and a negative terminal, an electrode control circuit, and an output port having a positive terminal and a negative terminal. The input port is connected to a source of power. The output port is connected to a load. The electrode switching circuit detects the electrode polarity of the input port and the output port for selectively coupling the positive terminals and the negative terminals of the two ports, and protecting the electrical equipment.