Abstract: An electron emission device includes a cathode device and a gate electrode. The gate electrode is separated and insulted from the cathode device. The gate electrode includes a carbon nanotube layer having a plurality of spaces. A display device includes a cathode device, an anode device spaced from the cathode electrode and a gate electrode. The gate electrode is disposed between the cathode device and the anode device. The cathode device, the anode device and the gate electrode are separated and insulted from each other. The gate electrode comprises a carbon nanotube layer having a plurality of spaces.

Abstract: A thermal electron emission source includes a first electrode, a second electrode insulated from the first electrode, a carbon nanotube string electrically connected to and in contact with the first electrode and the second electrode, and a number of electron emission particles. The carbon nanotube string is composed of a number of closely packed carbon nanotube bundles, and each of the carbon nanotube bundles includes a number of carbon nanotubes. The electron emission particles are uniformly dispersed in the carbon nanotube string and are coated on the surfaces of the carbon nanotubes. A method for making the thermal electron emission source is also provided.

Abstract: An airflow-guiding device (40) is secured at one side of a row of fans (20) in a computer chassis (10) and is capable of allowing air to flow therethrough in one direction only. The airflow-guiding device includes a bracket (42) and a plurality of shielding plates (44). The bracket is secured in the chassis and defines a plurality of guideways (428) therein. The shielding plates are pivotably secured in the guideways with shafts (442) thereof, respectively. The shaft of each of the shielding plates separates the corresponding plate into two portions. One of the two portions is larger and weightier than the other of the two portions.

Abstract: A system and method are disclosed for managing a network of sensors (100). A system that incorporates teachings of the present disclosure may include, for example, a sensor (102) belonging to the network of sensors operating in a geographic space having a controller (210) that manages a sensing device (204). The controller can be programmed to locate (302) itself in the geographic space, and assign (304) itself according to its location a zone within a portion of the geographic space and a corresponding data range for storing sensed information. Additional embodiments are disclosed.

Abstract: An ionization vacuum gauge includes a linear cathode, an anode, and an ion collector. The linear cathode, the anode, and the ion collector are concentrically aligned and arranged from center to outer, in that order. The linear cathode includes a linear base and a field emission film deposited coating on the linear base. The ionization vacuum gauge with low power consumption can be used in a high vacuum system and/or some special vacuum system that is sensitive to heat and light. Such a gauge can be used to determine, simply yet accurately, pressures at relatively high vacuum levels.

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 method for manufacturing a field emission electron source, the method comprising the steps of: preparing a substrate, a carbon nanotubes slurry, and a conductive slurry; applying a conductive slurry layer onto the substrate; applying a layer of carbon nanotubes slurry onto the conductive slurry layer; and solidifying the substrate under a temperature of 300 to 600 degrees centigrade so as to form the field emission electron source.

Abstract: A method for making a field emission lamp generally includes the steps of: (a) providing a cathode emitter; (b) providing a transparent glass tube having a carbon nanotube transparent conductive film and a fluorescent layer, the carbon nanotube transparent conductive film and the fluorescent layer both disposed on an inner surface of the transparent glass tube; (c) providing a first glass feedthrough and a second glass feedthrough, the first glass feedthrough having an anode down-lead pad, an anode down-lead pole connected to the anode down-lead pad, the second glass feedthrough having a cathode down-lead pole and a nickel pipe for securing one end of the cathode emitter; (d) securing the other end of the cathode emitter to one end of the cathode down-lead pole on the second glass feedthrough; (e) melting and assembling the first and second glass feedthroughs to ends of the glass tube respectively.

Abstract: An airflow-guiding device (40) is secured at one side of a row of fans (20) in a computer chassis (10) and is capable of allowing air to flow therethrough in one direction only. The airflow-guiding device includes a bracket (42) and a plurality of shielding plates (44). The bracket is secured in the chassis and defines a plurality of guideways (428) therein. The shielding plates are pivotably secured in the guideways with shafts (442) thereof, respectively. The shaft of each of the shielding plates separates the corresponding plate into two portions. One of the two portions is larger and weightier than the other of the two portions.

Abstract: A fan assembly (20) used for dissipating heat from an electronic device. The fan assembly includes a bracket (30) and a fan module (40). The bracket has two parallel retaining walls (31). Each retaining wall defines an opening (311) and two recesses (313) at opposite sides of the opening. The fan module is received in the bracket. The fan module includes a fan (50) and a pair of clamping members (60). The fan has a pair of fan openings in alignment with the openings of the bracket for airflow flowing therethrough. The clamping members are respectively attached to opposite sides of the fan. A pair of resilient arms (67) extends out from each clamping member. Each resilient arm has an engaging portion (671) received in the corresponding recess of one of the retaining walls. The fan module is retained in the bracket via the engaging portions engaging with the recesses and being sandwiched between the retaining walls.

Abstract: A field emission lamp (2) includes a housing (20), a first electrode (22), and a second electrode (24). The housing (20) includes a first supporting element (201) and a second supporting element (202). The first supporting element (201) is disposed at one end of the housing (20). The second supporting element (202) is disposed at opposite end of the housing (20). The first electrode (22) includes an electron emitter (222) and a first electric conduction element (224) electrically connected with the electron emitter (222). The first electric conduction element (224) is fastened to the first supporting element (201). The second electrode (24) includes an electric conduction membrane (241), a fluorescent layer (242) and a second electric conduction element (243). The fluorescent layer (242) is disposed on the electric conduction membrane (241) and corresponding to the electron emitter (222).

Abstract: A field emission lamp (2) includes a tubular-shaped housing (20), a first electrode (22), an electron emitting layer (24), a second electrode (26), and a fluorescent layer (28). The housing (20) has an inner surface. The first electrode (22) is centrally and longitudinally accommodated in the housing (20). The electron emitting layer (24) is disposed on the first electrode (22). The second electrode (26) is spaced apart from the first electrode (22) and includes a reflective layer (261). The reflective layer (261) is disposed on a portion of an inner surface of the housing (20). The fluorescent layer (28) is disposed on the reflective layer (261).

Abstract: A method for manufacturing a transparent conductive film on a glass structure, the method including the steps of: preparing a carbon nanotube slurry; applying a carbon nanotube slurry layer onto the glass structure; drying the carbon nanotube slurry layer on the glass structure; and solidifying the carbon nanotube slurry layer on the glass structure at an approximate temperature of 300˜500° C. and under protection of an inert gas, in order to form the transparent conductive film on the glass structure.