摘要:
Disclosed herein is a method of forming a silicon gate stack onto a silicon substrate for a silicon device. The method of forming the silicon gate stack comprises the steps of growing an oxide layer onto the silicon substrate, depositing a thin layer of silicon to form a thin layer of silicon over the oxide layer, depositing a thick layer of silicon over the thin layer of silicon, and introducing impurities into only the thick layer of silicon to form a silicon gate whereby the silicon gate includes the thin layer of silicon and the thick layer of silicon having the impurities. The impurities being introduced with a concentration, the impurities concentration and the thick layer thickness impeding an encroachment by the oxide layer into the silicon gate during application of a protective screen oxide layer around the silicon gate stack.
摘要:
A method of providing thick and thin oxide structures reduces step changes between a core region and a peripheral region on an integrated circuit. Thin LOCOS structures are provided in a core region of a flash memory device, and thick LOCOS structures are provided in a peripheral region of the flash memory device. The device and process are not as susceptible to "race track" problems, "oxide" bump problems, and "stringer" problems. The process utilizes two separate nitride or hard mask layers.
摘要:
A series select transistor and a source select transistor are connected in series at the end of a NAND string of floating gate data storage transistors. The floating gates, the series select gate, and the source select gate are all preferably formed of polysilicon. The same tunnel oxide layer is used as gate oxide for the series select transistor and source select transistor as well as for the floating gate data storage transistors. Two layers of polysilicon in the series select gate and the source select gates are tied together. The series select transistor is tied to the last transistor in the NAND string. The source select transistor is tied to the array Vss supply. In order to program inhibit a specific NAND cell during the programming of another NAND cell, the gate of the series select transistor is raised to Vcc, while the gate of the source select transistor is held to ground. The two transistors in series are able to withstand a much higher voltage at the end of the NAND string without causing gated-diode junction or oxide breakdown in either the series or the source select transistor.
摘要:
A method of forming a contact in a flash memory device utilizes a local interconnect process technique. The local interconnect process technique allows the contact to butt against or overlap a stacked gate associated with the memory cell. The contact can include tungsten. The stacked gate is covered by a barrier layer which also covers the insulative spacers.
摘要:
A curable rubber composition including a rubber, a plurality of ground particles, and a reactive surfactant represented by the formula: X—Y—Z where X is a reactive group capable of forming covalent links with the rubber during compounding or vulcanization, Y is a hydrophobic linkage, and Z is a polar group capable of forming self-assemblies via intermolecular interactions, and wherein the reactive surfactant is incompatible with the rubber and a method of making the same.
摘要:
An apparatus efficiently preparing ultrafine spherical metal powder includes a housing, a crucible and a powder collection area arranged in the housing. The turnplate arranged in the powder collection area is an inlaid structure. The part inlaid into the body part acts as an atomization plane of the turnplate. The atomization plane is provided with a concentric circular groove, and the turnplate is provided with an air hole. The apparatus is used for preparing ultrafine spherical metal powder by on-by-one droplets centrifugal atomization method, mainly combining the uniform droplet jet method and the centrifugal atomization method, which breaks through the traditional metal splitting model, makes the molten metal in a fibrous splitting, so as to efficiently prepare ultrafine spherical metal powder with narrow particle size distribution interval, high sphericity, good flowability, excellent spreadability, uniform and controllable size, no satellite droplets and suitable for industrial production.
摘要:
In one embodiment, communicating robot intentions to human beings involves determining movements that a robot will make to complete a task, visually communicating a long-term intention of the robot that provides an indication of the movements the robot will make in completing the task, and visually communicating a short-tem intention of the robot that provides an indication of a movement of the robot will make within the next few seconds in working toward completing the task.
摘要:
MEMS devices fabricated using inexpensive substrate materials such as paper or fabric, are provided. Using paper as a substrate, low cost, simple to prepare, lightweight, disposable piezoresistive sensors, including accelerometers are prepared. Signal-processing circuitry can also be patterned on the substrate material.The sensors can be utilized as two-dimensional sensors, or the paper substrate material can be folded to arrange the sensors in a three dimensional conformation. For example, three sensors can be patterned on a paper substrate and folded into a cube such that the three sensors are orthogonally positioned on the faces of a cube, permitting simultaneous measurement of accelerations along three orthogonal directions (x-y-z). These paper-based sensors can be mass produced by incorporating highly developed technologies for automatic paper cutting, folding, and screen-printing.Also provided are methods of modifying paper for use as a substrate material in MEMS devices.
摘要:
In one embodiment, planning a robot grasp of an object includes determining a grasp type that would be used by a human being to grasp the object, determining a position and orientation of the human being's thumb relative to the object, and planning the robot grasp based upon the determined grasp type and thumb position and orientation.
摘要:
A system and method for micromanipulating samples are described to perform automatic, reliable, and high-throughput sample microinjection of foreign genetic materials, proteins, and other molecules, as well as drawing genetic materials, proteins, and other molecules from the sample. The system and method overcome the problems inherent in traditional manual micromanipulation that is characterized by poor reproducibility, human fatigue, and low throughput. The present invention is particularly suited for adherent cell microinjection but can be readily extended to aspiration, isolation, and electrophysiological measurements of microorganisms, unicellular organisms, or cells.