Abstract: A device for measuring adhesion strength between a first optical element and a second optical element includes a force gauge, a first magnet, and a second magnet. The second magnet is fixed to the force gauge. The first magnet and the second magnet are configured for magnetically attaching to opposite sides of the first optical element. An attractive force between the first magnet and the second magnet is greater than the adhesion strength between the first optical element and the second optical element.

Abstract: The heat dissipating device (100) includes a container (110), a number of fins (120) and a cooling liquid (140). The container has a mounting portion (111) structured and arranged for mounting on a heat generating device (300). The mounting portion of the container has a shape conforming to a shape of the heat generating device. The container further includes an inlet (113) and an outlet (114). The container is comprised of a material selected from the group consisting of alumina, copper, stainless steel and any combination alloy thereof. The fins are arranged in the container and extending from the mounting portion thereof. The heat dissipating device further includes a thermal interface material (130) configured for being sandwiched between the mounting portion of the container and the heat generating device.

Abstract: A glue dispenser (40), for dispensing adhesive in assembling a lens module, includes a dispensing portion (41). The dispensing portion has a top side (411), a bottom side (412) positioned opposite to the top side, and a sidewall (413) connected to the top side and the bottom side. The dispensing portion further includes a main flow passage (415) for transporting adhesive therethrough and a plurality of feed flow passages (416). The main flow passage runs perpendicular from the top side toward the bottom side of the dispensing portion. The feed flow passages communicate with the main flow passage and radially extend to a joint of the side wall and the bottom side. At such a joint, the respective feed flow passages terminate and form a plurality of output ports (417) along an outer circumference of the bottom side.

Abstract: A spacer (20), configured to be disposed between two lenses (12, 13) of a lens module (10) in order to separate the two lenses by a predetermined distance, includes a through hole (22) penetrating therethrough for permitting light to pass therethrough, and an upper surface (201) configured for receiving adhesive thereon. The upper surface has a slot (23) defined therein around the through hole. The slot is configured for receiving excess adhesive. A lens module using the spacer and a method of assembling the lens module are also provided.

Abstract: A vacuum heat-dissipating device (300) includes a container (310), a top wall (320) coupled to the container, and working fluid sealed in the heat-dissipating device. The container includes a bottom wall (312) and a peripheral wall (314) perpendicular to the bottom wall. A catalyst layer (330) is disposed on an inner surface of the bottom wall. A plurality of CNTs (340) are formed on the catalyst layer.

Abstract: A heat sink includes a base and a plurality of carbon nanotubes. The base has a first surface and a second surface facing away from the first surface. The carbon nanotubes each have a main portion and a distal portion. The distal portion is embedded in the base and extends from the first surface to the second surface of the base, the main portion extends from the second surface in a direction away from the first surface of the base. The heat sink with a small volume has a large heat dissipating area, and, accordingly, has better heat dissipation.

Abstract: An apparatus for forming a film of solution of carbon nanotubes includes a retaining member, an array of spray nozzles, and a supply tube. The spray nozzles are mounted on the retaining member. The spray nozzles being in communication with the supply tube. The apparatus can deposit a film of solution of carbon nanotubes having high thickness uniformity.

Abstract: An exemplary grinding machine includes a grinding unit and a receiving unit. The grinding unit includes a rotor, a first spindle, and a first driver unit connected in series. The first spindle has a first end coupled to the rotor. The first driver unit is coupled to an opposite second end of the first spindle and configured for driving the rotor to rotate relative to a first axis. The receiving unit includes a container configured for receiving the rotor therein. The container has an inner spherical grinding surface defining a central second axis. The first axis is parallel to and spaced from the second axis.

Abstract: A working fluid for heat pipe includes a liquid and a plurality of nano-sized particles dispersed in the liquid. The liquid has a surface tension increasing with increasing temperature in a working temperature range of the heat pipe. The working fluid for heat pipe has a surface tension increasing with increasing temperature in a working temperature range of the heat pipe can avoid capillary limit of the heat pipe reducing at operating temperature range of the heat pipe. The nano-sized particles dispersed in the working fluid have high thermal conductivities, and the performance of the heat pipe can be enhanced.

Abstract: A heat transfer device includes an elongated container having an inner wall; a wick structure arranged on the inner wall of the container; a working fluid received in the container, the working fluid containing a liquid medium and a plurality of magnetic particles dispersed in the liquid medium; and at least one alternating magnetic field generator configured for applying an alternating magnetic field to the magnetic particles.

Abstract: A nano-scale filter (10) includes a porous supporting component (14) and a carbon nanotube filtration membrane (12) sintered on a top surface of the porous supporting component. The porous supporting component has a number of micro-scale pores. The filtration membrane is configured as a network formed by aggregating a number of multi-junction carbon nanotubes. The multi-function carbon nanotubes are selected from the group consisting of two-dimensional junction carbon nanotubes (30, 40, 50, 60), three-dimensional junction carbon nanotubes (20) and an admixture thereof. A method for making the nano-scale filter is also provided.

Abstract: An exemplary apparatus (10) is for analyzing a heat-transferring nano-fluid (20) with a view to obtaining information on heat-transferring properties of the nano-fluid. Typically, the nano-fluid is used for heat pipes. The apparatus includes an evaporating device (100) and a detecting device (200). The evaporating device is configured for preparing a gaseous sample (20?) of the nano-fluid for analyzing. The evaporating device includes a container (110) configured for containing the nano-fluid, and a temperature controller (120). The container has a first opening (112) allowing vaporized nano-fluid to exit therethrough. The temperature controller is configured for heating the nano-fluid in the container up to a predetermined temperature, and maintaining the nano-fluid at the predetermined temperature. The detecting device is configured for generating a laser light and receiving an optical emission from the gaseous sample, thus enabling heat-transferring properties of the nano-fluid to be analyzed.

Abstract: A device for testing heat conduction performance of a heat pipe is provided. In which the heat pipe to be tested includes an evaporating section and a condensing section. The device includes a block, a cooling device, a thermal interface material, a heating element for heating the block and a plurality of thermal probes. The block is coupled with the evaporating section of the heat pipe. The cooling device is coupled with the condensing section of the heat pipe. The thermal interface material is configured to be at a coupling interface between the block and the evaporating section of the heat pipe. The thermal probes are inserted into the block and the cooling device to measure the respective temperatures of distinct regions in the block and the cooling device where the thermal probes are located.

Abstract: In a method for making nanoparticles, a reaction chamber and at least two reactants are firstly provided. One of the reactants is a liquid reactant, and at least one high-pressure injector is disposed in the reaction. Secondly, the liquid reactant is atomized by the injector, and simultaneously mixes with the other reactants in the reaction chamber. Nanoparticles can be precipitated from the mixture of the reactants thereby. Finally, the nanoparticles are isolated from the mixture. The reactants can mix on the micro-scale via the atomization of the liquid reactant, which efficiently reduces the mixing scale and increase the effective contact area between the reactants. Thus the particle-size distribution of the precipitate can easily be controlled.

Abstract: A fluid filling system for a vacuum container includes a fluid supply system configured for filling fluid into a container to be filled, a vacuum exhaust system configured for vacuumizing the container to a predetermined vacuum pressure, and a refrigeration device configured for freezing the fluid filled in the container. A fluid filling method for a vacuum container is also provided.

Abstract: A method for forming quantum dots includes the following steps: (a) depositing a metal layer (4) on a substrate (2); (b) using an atomic force microscope (AFM) probe (6) to form a plurality of nanopores (42) in the metal layer (4); (c) depositing a semiconductor layer (3) on the metal layer and in the nanopores; and (d) removing the metal layer and the portions of the semiconductor layer located on the metal layer, thereby forming a plurality of quantum dots (82) on the substrate. The method does not use a photolithography technique, thus reduces or even avoids the possibility of forming various surface states. Furthermore, a potential effect of the thermal expansion coefficient of the metal is finite over the temperature range involved and thus the size of the nanopores, which are restricted by the metal layer, is essentially constant. Therefore, a size of the quantum dots is controllable.