97results about How to "Avoid thermal effects" patented technology

A wafer carrier assembly for use in a system for growing epitaxial layers on one or more wafers by chemical vapor deposition (CVD), the wafer carrier assembly includes a wafer carrier body formed symmetrically about a central axis, and including a generally planar top surface that is situated perpendicularly to the central axis and a planar bottom surface that is parallel to the top surface. At least one wafer retention pocket is recessed in the wafer carrier body from the top surface. Each of the at least one wafer retention pocket includes a floor surface and a peripheral wall surface that surrounds the floor surface and defines a periphery of that wafer retention pocket. At least one thermal control feature includes an interior cavity or void formed in the wafer carrier body and is defined by interior surfaces of the wafer carrier body.

The invention provides a wireless power charger comprising a wireless and a power bank. The wireless charging base including a wireless transmitter configured to transmit an identification signal. The power bank is electrically connected to a portable device including a first rechargeable battery, and the power bank including a second rechargeable battery, a wireless receiver, and a control unit. The wireless receiver is configured to receive the identification signal and transmit a response signal to the wireless transmitter while the power bank is placed onto the wireless charging base. The control unit is configured to control and output the power to the first rechargeable battery or the second rechargeable battery.

In a stratified-scavenging two-stroke internal combustion engine, air-fuel mixture outlets (14b) and air outlets (15b) are provided on either side of a cylinder (3), and the air-fuel mixture outlets (14b) and the air outlets (15b) communicate with a crank chamber (6) via air-fuel mixture passageways (14) and air passageways (15). The crank chamber (6) is charged with air from an air-feeding port (12). An inlet port (10) is disposed on either side of the air-feeding port (12), and mixture (M) from each inlet port (10) is charged into the air-fuel mixture passageways (14) via air-fuel mixture introduction recesses (17) formed in the outer surface of a piston (2). The air outlets (15b) are positioned nearer to the exhaust port (11), while the air-fuel mixture outlets (14b) are positioned nearer to the inlet ports (10). In the exhaust stroke, the cylinder chamber (7) is scavenged via air (A) supplied from the crank chamber (6) through the air outlets (15b) and interposed between the combustion gas (E) in the cylinder chamber (7) and the mixture (M) from the air-fuel mixture outlets (14b).

The invention discloses a method for manufacturing a CNT (carbon nanotube) composite transmission conductor, which comprises the following steps: filling MCNT (multiwalled carbon nanotube) powder accounting for 1 to 7 percent of the total mass into small holes uniformly drilled on electrotechnical aluminium blocks; stacking two aluminium blocks in which the MCNT powder has been filled inversely by using a blind-hole method; after the two aluminium blocks are prepared into composite materials through a friction extrusion process, carrying out tandem rolling and drawing on the composite materials so as to prepare the composite materials into required CNT/aluminum based composite material round wires; and finally, stranding the round wires by a wire twisting machine, then through a back-twisting stress eliminating device, obtaining a single-stranded CNT composite transmission conductor. The method of the invention has the advantages: 1) the coefficient of linear expansion of the conductor is small, and the thermal deformation resistance performance is strong, the method can reduce the influence of the temperature on sag change, improve the sag characteristics, improve the security of overhead lines, and reduce the construction cost of the lines; 2) the method is helpful to improve the conductivity of the conductor along the line, and further reduce the transmission losses; and 3) the process is relatively simple, and the loosening and skid phenomenon and the like of composite cores and aluminium strands due to various reasons do not exist.

The invention provides a device for machining small holes by using ultrashort pulse laser and a small hole machining method. The device comprises a scanning galvanometer, a laser scanning focus lens and a wedge lens. The scanning galvanometer, the laser scanning focus lens and the wedge lens are arranged on the same central axis. A laser beam rotates around the central axis along a concentric circle track through the scanning galvanometer, is focused through the laser scanning focus lens and is deflected far away from the central axis through the wedge lens. The wedge lens and the laser beam rotate synchronously to keep the inclination angle of the laser beams to be the same. The device for machining small holes by using ultrashort pulse laser and the small hole machining method have the advantages that the small hole machining depth is increased and the machining quality and stability of the small holes are improved.

The manufacture process of superthin high-refractivity optical resin lens includes the following steps: making mold, reinforcing treatment and closing mold with tape machine; weighing chemical monomer and initiator, mixing and vacuum deairing; depositing the mixture in the mold, curing to form, demolding and cleaning. The present invention features the chemical monomer with one kind of alkenyl radical containing organic compound additive, the initiator being tert-butyl peroxide, the ratio among the chemical monomer, the additive and the initiator of 100 to 0.1-0.3 to 0.7-0.9, computerized temperature control during the polymerization, and the secondary curing of lens after demolding and cleaning. The present invention eliminates the lens profile variation caused by the polymerization and raises the optical precision of the lens.

A guide for a traveling transmission medium such as a timing chain comprises a resin shoe for sliding contact with the transmission medium, supported on a base frame having an two flanges and a web in an I-shaped cross-section. The base frame is produced from aluminum by die casting, using a three-part mold. Two parts of the mold cooperate to form a part of the mold cavity that forms one of the flanges and the web of the base frame, and a third part of the mold cooperates with the first two parts to form a part of the cavity in which the other flange of the base frame is formed without a draft.

A cold-cathode ray tube is adopted as an exposure lamp and the exposure lamp is always lit. When the exposure lamp exists at a standby position, a light of the exposure lamp is irradiated at a lower surface side of a control panel. By this irradiation, the liquid crystal display section of the control panel is irradiated in a state of looking bright and clear.

The invention discloses a method for extracting total flavonoids from psidium guajava leaves. The method is characterized by comprising the steps of putting the psidium guajava leaves in an aqueous solution of a surfactant, carrying out extraction under the assistance of microwaves and ultrasonics, and then, carrying out solid-liquid separation, thereby obtaining an extract containing the total flavonoids, wherein the mass percent of the surfactant in the aqueous solution of the surfactant is 1% to 3%, the microwave power is 100W to 150W, and the ultrasonic power is 600W to 650W. According the method, an organic solvent is replaced with an aqueous solution, and the wetting and solubilization actions of the surfactant, a bulk-heating principle of microwave extraction and an cavitation effect of the ultrasonics are fully combined, so that the traditional problem, i.e., organic solvent residue is solved, meanwhile, the extraction time can be greatly shortened, the extraction ratio is increased, the production cost of enterprises is reduced, and the method has a broad popularization prospect.

The invention discloses a solar battery comprising a first electrode, a first photosensitive layer, a second photosensitive layer, a second electrode and a lower conversion layer, which are sequentially arranged from the bottom up. The first photosensitive layer and the second photosensitive layer form an electron donor-electron acceptor heterojunction. The solar battery disclosed by the invention has high utilization ratio of a solar spectrum, the problem of the thermal effect of current carriers is overcome, and the energy conversion efficiency of the solar battery is largely increased.

A casing of a fuel cell system is divided into a module area, a fluid supply area, and an electric parts area. The fluid supply area is provided on a first side surface of the module area, and an electric parts area is provided on a second side surface of the module area. A fuel cell module and a combustor are provided in the module area.