Abstract: The present disclosure discloses a method for recycling all types of lithium batteries. First, the lithium battery waste is acid-leached to obtain a solution containing most of metal ions. After filtering, the solution is separated from the remaining solids, and then the obtained solution is subjected to separate precipitation many times. After separately adjusting the pH value of the solution many times, adding precipitants with a high selectivity ratio, and matching with filtration and separation reaction, all ions in the lithium battery waste are sequentially precipitated in forms of iron phosphate (FePO4), aluminum hydroxide (Al(OH)3), manganese oxide (MnO2), dicobalt trioxide (cobalt oxide, Co2O3), nickel hydroxide (Ni(OH)2), and lithium carbonate (Li2CO3).

Abstract: Systems and methods are provided for fail-safe protection of circuitry from electrostatic discharge due through input and output connections. The power circuitry may include a string of diodes, connections to power lines, and particular diodes for voltage pull-up and pull-down clamping. There may be both a pull-up third diode in the diode string for connection between I/O and VDD and a pull-down third diode between I/O and VSS. During an ESD event the ESD device is configured to hold voltage from exceeding a threshold voltage and damaging internal circuitry. During operational mode the ESD device is turned off and does not interfere with circuit operations.

Abstract: A rotary engine is provided, including: a stator assembly, including an intake stator including an annular intake groove and an exhaust stator including an annular exhaust groove which define a track therebetween; a rotor, rotatably disposed between the intake and exhaust stators, including cylinders each being covered by one of the cylinder head and cylinder heads each including an intake port and an exhaust port, the intake and exhaust ports being connected to the annular intake and exhaust grooves, respectively; a shaft, inserted axially in the stator assembly and the rotor; valve mechanisms, posited on the cylinder heads respectively and each including an intake valve and an exhaust valve; pistons, received in the cylinders respectively and each including a piston rod which is movable along the track; and spark plugs, posited on the cylinder heads and exposed to interiors of the cylinders, respectively.

Abstract: A method of fabricating a substrate having a through via includes: providing a carrier board having a release layer thereon; attaching the substrate onto the carrier board via the release layer; applying a light beam to the substrate to form a first blind hole in the substrate, wherein the first blind hole penetrates a first surface and a second surface of the substrate; performing an enlargement process on the first blind hole to form a second blind hole; forming a through via in the second blind hole; and performing a de-bonding process to release the substrate having a through via from the carrier board.

Abstract: A cutting method for forming a chamfered corner includes a step of selecting a light pattern-adjusting module according to a pre-cut chamfer angle, a step of the light pattern-adjusting module emitting a laser beam to a substrate and thus forming a modified region extending in a thickness direction at the substrate, a step of the light pattern-adjusting module adjusting an axial energy distribution of a light pattern of the laser beam to vary an appearance of the modified region so as to form the modified region fulfilling the pre-cut chamfer angle, and a step of etching the substrate having the modified region to form a chamfered surface on the substrate by cutting the modified region from the substrate.

Abstract: A method of fabricating a substrate having a through via includes: providing a carrier board having a release layer thereon; attaching the substrate onto the carrier board via the release layer; applying a light beam to the substrate to form a first blind hole in the substrate, wherein the first blind hole penetrates a first surface and a second surface of the substrate; performing an enlargement process on the first blind hole to form a second blind hole; forming a through via in the second blind hole; and performing a de-bonding process to release the substrate having a through via from the carrier board.

Abstract: The disclosure relates to a board-to-board connector including a body, multiple terminals and a pair of metal fittings. The body has an accommodating recess. The terminal is disposed on the body and a portion of each of the terminals extends to the accommodating recess. The metal fittings are disposed on the body and beside the accommodating recess. The terminals are located between metal fittings. Each of the metal fittings has at least one limiting portion that extends to the accommodating recess. The limiting portion leans against a corner of the accommodating recess so that the metal fittings and the body generate a two-dimensional limitation. A board-to-board connector assembly is also provided.

Abstract: A cutting method for forming a chamfered corner includes a step of selecting a light pattern-adjusting module according to a pre-cut chamfer angle, a step of the light pattern-adjusting module emitting a laser beam to a substrate and thus forming a modified region extending in a thickness direction at the substrate, a step of the light pattern-adjusting module adjusting an axial energy distribution of a light pattern of the laser beam to vary an appearance of the modified region so as to form the modified region fulfilling the pre-cut chamfer angle, and a step of etching the substrate having the modified region to form a chamfered surface on the substrate by cutting the modified region from the substrate.

Abstract: The disclosure relates to a board-to-board connector including a body, multiple terminals and a pair of metal fittings. The body has an accommodating recess. The terminal is disposed on the body and a portion of each of the terminals extends to the accommodating recess. The metal fittings are disposed on the body and beside the accommodating recess. The terminals are located between metal fittings. Each of the metal fittings has at least one limiting portion that extends to the accommodating recess. The limiting portion leans against a corner of the accommodating recess so that the metal fittings and the body generate a two-dimensional limitation. A board-to-board connector assembly is also provided.

Abstract: An erasing method and a memory device are provided. The memory device includes a plurality of memory blocks. Each of the memory blocks has n sub-blocks. The erasing method includes the following steps. A first erase region is selected from a first memory block of the memory blocks, and the first erase region includes at least one sub-block. A sub-block erase operation is performed on the first erase region of the first memory block.

Abstract: An erasing method and a memory device are provided. The memory device includes a plurality of memory blocks. Each of the memory blocks has n sub-blocks. The erasing method includes the following steps. A first erase region is selected from a first memory block of the memory blocks, and the first erase region includes at least one sub-block. A sub-block erase operation is performed on the first erase region of the first memory block.

Abstract: The present invention is related to a three-dimensional graphene oxide microstructure and making method of thereof. First, a photoreactive agent is added into a graphene oxide solution, wherein the photoreactive agent is a photoreactivator in a nonlinear optical method. Then, the photoreactivator in the graphene oxide solution is activated by a beam emitted from an excitation module to produce singlet oxygen with high activity. Finally, the graphene oxide is activated by the singlet oxygen for an unpaired electron of the graphene oxide covalently bonding with another graphene oxide to form a three-dimensional graphene oxide microstructure. Therefore, two-dimensional graphene oxides are efficiently cross-linked with each other to form a three-dimensional graphene oxide microstructure by a nonlinear optical technique of an ultrafast laser system so as to apply to the development of all electronic and optical components.

Abstract: An information search server and an information search method thereof are provided. The information search server includes a transceiver and a processor. The transceiver receives a search message having an original store phone number of an original store from a user device. The processor performs a data mining procedure, according to the original store phone number, to obtain an original store name and an original store address associated with the original store phone number, a category associated with the original store name, an original store latitude and longitude associated with the original store address, and a recommended store information associated with the category and the original store latitude and longitude, and generates a result message having the recommended store information. The transceiver further transmits the result message to the user device.