Abstract:
In a method of etching a substrate having a surface layer of conductive material, a circuit pattern is transferred to the surface layer in a central surface area portion of the substrate by electrochemical etching. To prevent excessive current densities from forming at the periphery of the central surface area portion during the etching step, a frame adapted to attract electrical field is provided adjacent to the central surface area portion. The frame can be part of a separate frame element which is placed on the substrate before the etching step, or be incorporated in a resist coating on the substrate. The frame can be transferred to the resist coating by any suitable means, for example by photolithographic exposure through a mask with a suitable frame pattern. Alternatively, the frame can be incorporated in a prefabricated substrate element, to which the circuit pattern is transferred in the etching step.
Abstract:
The present invention provides a method for forming a three-dimensional wafer stack having a single metallized stack via with a variable cross-sectional shape. The method uses at least first and silicon wafers. Each wafer has one or more integrated circuits formed thereon. One or more through-vias are formed in each silicon wafer followed by oxide formation on at least an upper and lower surface of the silicon wafer. The wafers are aligned such that each wafer through via is aligned with a corresponding through via in adjacent stacked wafers. Wafers are bonded to form a three-dimensional wafer stack having one or more stack vias formed from the alignment of individual wafer vias. Via metallization is performed by depositing a seed layer in each of the stack vias followed by copper electroplating to form a continuous and homogeneous metallization path through the three-dimensional wafer stack.
Abstract:
An integrative deep draft floating production platform with unconditional stability and an offshore installation method thereof are disclosed. The platform comprises an ring ballast tank at the bottom, some columns with small cross sections, an ring buoyancy tank at the middle part, some columns with large cross sections, and an upper drilling equipment and oil gas processing module. The ballast tank adopts a permanently fixed ballast, and the tank is internally filled with weights to ensure that the center of buoyancy of the platform is higher than the center of gravity. The drilling equipment and oil gas processing module is installed in the construction site, and the platform is transported to the installation site by a dry tow or wet tow as a whole and then is installed. The platform can be applied to deepwater oil and gas exploitation under harsh marine environment.
Abstract:
A method of aligning electronic components comprising providing a positioning member 110 having at least one formation 120 for receiving an electronic component; said at least one formation having lateral boundaries 35, 36 for constraining movement of an electronic component; placing a first electronic component 10a in said at least one formation; and providing a force for actively aligning said first electronic component with a lateral boundary of said at least one formation. The force may, for example, be provided by tilting the positioning member, by providing suction or by using an actuator. An apparatus for aligning electronic components and a 3D system of stacked electronic components is also disclosed.
Abstract:
A magnetic field generator arranged behind a target and for generating a magnetic field on a front surface of the target based on magnetic force lines can include a ring-shaped outer magnetic body having a pole axis in a parallel direction (X-direction) with respect to the target surface, a center magnetic body arranged on an inner side of the outer magnetic body and having a pole axis in a parallel direction (X-direction) with the direction of the pole axis of the outer magnetic body, a yoke plate for supporting the outer magnetic body and the center magnetic body from behind, and a magnetic permeable plate for changing a magnetic field distribution of the front surface of the target. The magnetic permeable plate is arranged so as to be supported by the yoke plate from behind.
Abstract:
The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a BEA framework structure comprising YO2 and optionally comprising X2O3, wherein said process comprises the steps of (1) preparing a mixture comprising seed crystals and at least one source for YO2; and (2) crystallizing the mixture; wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises at least one alkali metal M, wherein when the BEA framework additionally comprises X2O3, the mixture according to step (1) comprises at least one source for X2O3, and wherein the seed crystals comprise zeolitic material having a BEA framework structure, preferably zeolite Beta.
Abstract translation:本发明涉及一种用于生产具有包含YO 2和任选地包含X 2 O 3的BEA骨架结构的沸石材料的无机模板合成方法,其中所述方法包括以下步骤:(1)制备包含晶种和至少一种 来源为YO2; 和(2)使混合物结晶; 其中Y是四价元素,X是三价元素,其中沸石材料任选地包含至少一种碱金属M,其中当BEA骨架另外包含X 2 O 3时,根据步骤(1)的混合物包含至少一种源 X 2 O 3,并且其中所述晶种包含具有BEA骨架结构的沸石材料,优选沸石β。
Abstract:
An integrative deep draft floating production platform with unconditional stability and an offshore installation method thereof are disclosed. The platform comprises an ring ballast tank (1) at the bottom, some columns with small cross sections (2), an ring buoyancy tank (3) at the middle part, some columns with large cross sections (4), and an upper drilling rig and oil gas processing module (5). The ballast tank adopts a permanently fixed ballast, and the tank is internally filled with weights to ensure that the center of buoyancy of the platform is higher than the center of gravity. The columns with large and small cross sections are uniformly arranged on the buoyancy tank and the ballast tank respectively, and the lower parts thereof are respectively integrated with the buoyancy tank and the ballast tank. Each column with a large cross section is provided with a central pore canal (7) axially, a lower part in the central pore canal is provided with a chopping board connection structure (8) with a groove. After the construction is completed, the columns with small cross sections are inserted into and pass through the central pore canals of the columns with large cross sections correspondingly, and the platform is in a folded state. Each column with a large cross section is provided with a group of mooring lines (15). The drilling rig and oil gas processing module is installed in the construction site, and the platform is transported to the installation site by a dry tow or wet tow as a whole and then is installed. The platform can be applied to deepwater oil and gas exploitation under harsh marine environment.
Abstract:
The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a BEA framework structure comprising YO2 and optionally comprising X2O3, wherein said process comprises the steps of (1) preparing a mixture comprising seed crystals and at least one source for YO2; and (2) crystallizing the mixture; wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises at least one alkali metal M, wherein when the BEA framework additionally comprises X2O3; the mixture according to step (1) comprises at least one source for X2O3, and wherein the seed crystals comprise zeolitic material having a BEA framework structure, preferably zeolite Beta.
Abstract translation:本发明涉及一种用于生产具有包含YO 2和任选地包含X 2 O 3的BEA骨架结构的沸石材料的无机模板合成方法,其中所述方法包括以下步骤:(1)制备包含晶种和至少一种 来源为YO2; 和(2)使混合物结晶; 其中Y是四价元素,X是三价元素,其中沸石材料任选地包含至少一种碱金属M,其中当BEA骨架另外包含X 2 O 3时; 根据步骤(1)的混合物包含至少一种X 2 O 3源,并且其中所述晶种包含具有BEA骨架结构的沸石材料,优选沸石β。