摘要:
A method for estimating internal multiples in seismic data. The method includes selecting a subset from a set of regularly sampled seismic data based on a low-discrepancy point set. The method may then include integrating one or more depth integrals of the inverse-scattering internal multiple prediction (ISIMP) algorithm over each data point in the subset. After integrating the depth integrals, the method may then include integrating a function of the integrated depth integrals using a quasi-Monte Carlo (QMC) integration over the subset, thereby generating an estimate of the internal multiples.
摘要:
A solid composition containing: (a) at least one metal hydride compound; (b) at least one borohydride compound; and (c) at least one of: (i) a transition metal halide, or (ii) a transition metal boride. A “metal hydride” is a compound containing only one metal and hydrogen, including, e.g., alkali and alkaline earth metal hydrides. A “borohydride compound” is a compound containing the borohydride anion, BH4−.
摘要:
A heat dissipating device includes a fluid container made of a heat conductive material and having a heat-dissipating wall opposite to a heat-absorbing wall, and a surrounding wall cooperating with the heat-absorbing and heat-dissipating walls so as to confine a sealed vapor chamber. A heat exchanger member is disposed in the vapor chamber, is in heat-conductive contact with the heat-absorbing wall, and contains an amount of working fluid capable of changing into fluid vapor that fills the vapor chamber upon absorbing heat from the heat-absorbing wall. The fluid vapor is capable of changing into fluid condensate when cooled due to contact with the heat-dissipating wall. A heat-conductive cover plate is mounted spacedly on the heat-dissipating wall of the fluid container, and cooperates with the heat-dissipating wall so as to confine a heat-dissipating passage therebetween such that heat absorbed by the heat-dissipating wall is dissipated via the heat-dissipating passage.
摘要:
A method of fabricating a self-aligned contact window is described. A gate oxide layer, a conductive layer, a first oxide layer and an undoped polysilicon layer are successively formed on a substrate. These layers above are patterned to form a gate structure. A water clean step is performed, producing a recess in the first oxide layer. A second oxide layer is thermally formed on the surface of the gate structure. An undoped polysilicon spacer is formed on the sidewall of the gate structure and a portion of the undoped polysilicon spacer extends into the recess of the first oxide layer. A dielectric layer is formed over the substrate and using the undoped polysilicon spacer as an etching stop, a self-aligned contact window is formed to expose the source/drain region.
摘要:
Sulfur-containing ester derivatives of arylamines and hindered phenols have been found to be effective antioxidant and antiwear additives for lubricants.
摘要:
A method for production of stabilized fatty acid methyl esters. The method removes unsaturation present in fatty acid methyl esters, or removes unsaturation in triglycerides, which are then transesterified to fatty acid methyl esters.
摘要:
A method for forming transistor devices with different spacer width for mixed-mode IC is provided. The method provides three different kinds of transistor devices on a wafer, two of them have their own spacer with different width, while the remaining one is without a spacer. The method comprises providing a semiconductor substrate having at least a first conductive gate, a second conductive gate and a third conductive gate formed thereon, and forming a first oxide layer over the first conductive gate, the second conductive gate and the third conductive gate. Then, a first etch operation is performed to form an oxide spacer along each sidewall of the first conductive gate, the second conductive gate and the third conductive gate. A first mask is then formed over the first conductive gate, and then the spacer is removed formed along each sidewall of the second conductive gate and the third conductive gate. After that, the first mask over the first conductive gate is removed. Subsequently, a silicon nitride layer is formed with a thickness different from that of the first oxide layer over the first conductive gate, the second conductive gate and the third conductive gate. Then, a second etch operation is performed to form a spacer of silicon nitride along each sidewall of the second conductive gate and the third conductive gate. Thereafter, a second conformal oxide layer is formed over the first conductive gate, the second conductive gate and the third conductive gate. Subsequently, a second mask is formed over the second oxide layer formed on the second conductive gate, while exposing the second conformal oxide layer over the first conductive gate and the third conductive gate. The second oxide layer is removed, and then the second mask is removed. Finally, the spacer of silicon nitride is removed along each sidewall of the third conductive gate with hot H3PO4 aqueous solution.
摘要:
A method of fabricating a load resistor for an SRAM. A substrate has a polysilicon layer formed thereon through a buried contact process. An inter-layer dielectric layer is formed over the substrate and then patterned to form an opening that exposes the polysilicon layer. A poly via is then formed in the opening to serve as a load resistor. The inter-layer dielectric layer is patterned to form a contact window, which is then filled with a conductive layer to form a contact.
摘要:
A method for fabricating a metal interconnect involves forming a first dielectric layer on the substrate having metal lines formed thereon, wherein the top surface of the first dielectric layer is lower than that of the metal line. As a result, the top surface and a part of the sidewall of the metal line are exposed. A spacer is then formed on the exposed sidewall of the metal line. A second dielectric layer is formed on the substrate, wherein the spacer has different etching selectivity from the second dielectric layer. With the spacer serving as an etching stop layer, a via opening is formed in the second dielectric layer, while the via opening is filled with a metal plug to form a via plug.