摘要:
Disclosed is a flywheel system for storing kinetic energy which utilizes a high temperature superconductor/magnet system for the flywheel bearings. The flywheel includes a first magnet, and having a ring magnet defining an opening. The levitation system includes a magnet for attractively interacting with first flywheel magnet, with a high temperature superconductor interposed between them, and further includes a magnet system for repulsively interacting with and partially inserted into the ring magnet.
摘要:
An isolation system for isolating a first object from vibrations from a second object. Such vibrations will have three orthogonal components, one oriented along a line between the objects, and two oriented 90.degree. apart in a plane normal to that line. The system includes three superconductor/magnet stages, each stage designed to extinguish one of the orthogonal components.
摘要:
A torque/reactive momentum wheel control system for use in satellites for dynamic attitude maintenance and alteration where the flywheel of each momentum wheel is levitated by a high-temperature superconducting element repulsively interacting with permanent magnets in the flywheel. The spin rate (rpm) of the flywheel being controlled by either an active magneto or electromagneto drive system. Each momentum wheel is cooled by a cryo-cooler and can have a total weight of about 10 Kg to a fraction of 1 Kg and delivering 3.5 Js with less than 1 W loss.
摘要:
Disclosed are devices for influencing and/or controlling relative motion between members, such as vibration damping or absorbing devices, clutches and brakes. The devices comprise a magnet on one member and a field cooled superconductor on the other member. The devices utilize the interaction of the magnetic field of the magnet as it moves through the pinned flux in the superconductor to either influence or control relative motion.
摘要:
Disclosed are devices for influencing and/or controlling relative motion between members, such as vibration damping or absorbing devices, clutches and brakes. The devices comprise a magnet on one member and a field cooled superconductor on the other member. The devices utilize the interaction of the magnetic field of the magnet as it moves through the pinned flux in the superconductor to either influence or control relative motion.
摘要:
A superconductor-magnet system having high thrust and stability, with a method for increasing the thrust and stability of such a system, comprises a first magnet, a second magnet and a superconductor. The magnets are in motion relative to each other and the superconductor is in motion relative to one and stationary relative to the other magnet. High thrust and stability can be achieved by increasing the magnetic field of the magnet in motion relative to the superconductor. Also disclosed are magnetic thrust and journal bearings utilizing the above system.
摘要:
Methods for fabricating metal nano-particle embedded enhancement substrates used for surface enhanced Raman spectroscopy (SERS) including ion implanting metal nano-particles into the substrate and etching the substrate to partially expose the metal nano-particles. The resulting material is useful as a SERS substrate for detection of molecules adsorbed on it by surface enhanced Raman spectroscopy.
摘要:
Vacancies and dopant ions are introduced near the surface of a semiconductor wafer. The dopant ions which diffuse by an interstitialcy mechanism have diffusivity greatly reduced, which leads to a very low resistivity doped region and a very shallow junction.
摘要:
A method of preparing nanorod arrays using ion beam implantation is described that includes defining a pattern on a substrate and then implanting ions into the substrate using ion beam implantation. Next, a thin film is deposited on the substrate. During film growth, nanotrenches form and catalyze the formation of nanorods through capillary condensation. The resulting nanorods are aligned with the supporting matrix and are free from lattice and thermal strain effect. The density, size, and aspect ratios of the nanorods can be varied by changing the ion beam implantation and thin film growth conditions resulting in control of emission efficiency.
摘要:
A method of forming a stable unction on a microelectronic structure on a semiconductor wafer having a silicon surface layer on a substrate includes the following steps: implanting dopant ions into the surface layer; cleaning and oxidizing the surface layer, and twice annealing the wafer to recover a damaged silicon crystal structure of the surface layer resulting from the low energy ion implantation. The first annealing process uses a temperature range of 800° C. to 1200° C. for a duration from about a fraction of a second to less than about 1000 seconds, with a ramp-up rate of about 50° C./second to about 1000° C./second. The second annealing process uses a temperature range of 400° C. to 650° C. for a time period of from about 1 second to about 10 hours, and more preferably, from about 60 seconds to about 1 hour. Both annealing processes include cooling processes.