摘要:
A semiconductor structure for use as a template for forming high-performance metal oxide semiconductor field effect transistor (MOSFET) devices is provided. More specifically, the present invention provides a structure that includes a SiGe-on-insulator substrate comprising a tensile-strained SiGe alloy layer located atop an insulating layer; and a strained Si layer atop the tensile-strained SiGe alloy layer. The present invention also provides a method of forming the tensile-strained SGOI substrate as well as the heterostructure described above. The method of the present invention decouples the preference for high strain in the strained Si layer and the Ge content in the underlying layer by providing a tensile-strained SiGe alloy layer directly atop on an insulating layer. Specifically, the method includes forming a first multilayered structure comprising at least a tensile-strained SiGe alloy layer located above a relaxed SiGe alloy layer, wherein the tensile-strained SiGe alloy contains a lower Ge content than the relaxed SiGe alloy layer; bonding the first multilayered structure to an insulating layer of a second multilayered structure on a surface opposite the relaxed SiGe alloy layer; and removing the relaxed SiGe alloy layer.
摘要:
A silicon and silicon germanium based semiconductor MODFET device design and method of manufacture. The MODFET design includes a high-mobility layer structure capable of ultra high-speed, low-noise for a variety of communication applications including RF, microwave, sub-millimeter-wave and millimeter-wave. The epitaxial field effect transistor layer structure includes critical (vertical and lateral) device scaling and layer structure design for a high mobility strained n-channel and p-channel transistor incorporating silicon and silicon germanium layers to form the optimum modulation-doped heterostructure on an ultra thin SOI or SGOI substrate capable of achieving greatly improved RF performance.
摘要:
Methods and apparatus for aiding aneurysm repair are provided. Such apparatus is constructed to support or bolster the aneurysmal site initially, while contracting if the aneurysmal site shrinks or contracts. The apparatus also supplies a pharmaceutical agent to aid in healing the surrounding aneurysmal tissue. The apparatus may comprise a drug eluting polymer or may have a passive coating which can be selectively deployed by adding an activation agent after deployment. The device can be used alone or in conjunction with a AAA stent graft that isolates the aneurysmal sac from the vascular system.
摘要:
An improved adjustable wheel structure mainly adapted for use in a trailing vehicle on which a yacht, boat or motorcycle can be mounted for transportation; the present wheel structure is provided with a special nut member having its inner surface half threaded and half smoothed, and the nut member is able to be adjusted forward or backward so that the threaded inner surface thereof can be selectively engaged with a vertically disposed adjusting screw rod which has a smaller diameter than the central through hole of the slidable nut member so that the wheel structure can be smoothly adjusted in height; as the threaded side of the nut member is adjusted to disengage from the screw rod with the smoothed side thereof in contact with the adjusting screw rod, the wheel structure can be adjusted quickly rather than in stepwise manner.
摘要:
In a client-server system where a client system presents a browser for user interaction, a browser user interface includes functionality for handling dynamic interface elements received by the browser in connection with received pages, presented as part of the browser user interface and modified in response to selected user input without requiring farther interaction with a server. In addition to, or in place of, dynamic interface elements such as slide sheets, the browser user interface might also include a rotation display area, tool displays that can overlay a page, opaquely or semi-transparently, menu structures, and an ability for the user to modify a page layout without requiring server interaction. The browser might comprise storage for a plurality of rotation display items for storing a summary and a primary presentation for each rotation display item, logic for displaying, by the browser, primary presentations for less all of the plurality of rotation display items in the rotation display area, logic for displaying, by the browser, summaries for items wherein the number of summaries is greater than the number of primary presentations presented at one time, logic for highlighting, among the summaries displayed, the ones of the summaries that correspond to the primary presentations displayed in the rotation display area; and logic for rotating the plurality of rotation display items to display primary presentations for a different subsets of the rotation display items and for updating highlighting of summaries to correspond to the different subsets of rotation display items.
摘要:
A stent graft includes at least one aperture extending through the main body thereof, into which an extension portion may be deployed for positioning within an adjacent branch flow lumen. The extension portions include self biasing features, wherein the extension is biased into engagement with the main body to seal the interface thereof. Additionally, the extension portion may be configured for tortuous or deviated anatomy, to enable sealing of the extension portion with the body while extending the extension portion in a substantially non-radial direction from the main body.
摘要:
A polymer coating/ring is employed to aid in the sealing and connection of modular elements used in body flow lumens for the exclusion and bypass of diseased regions of the flow lumen, such as where aneurysm occurs adjacent to branching blood vessels.
摘要:
A low powered activation electronic device includes a power source, an electronic circuit, having two spaced apart electrodes, electrically connected to the power source to form an opened circuit, and two fabric contacts made of textile material provided at the two electrodes of the electronic circuit, wherein the electronic circuit is formed a closed circuit to activate the electronic device in responsive to a physical touch by a human operator at the two fabric contacts.
摘要:
Methods, devices and systems are described for treating venous insufficiency in which the vein is compressed at least partially along a treatment zone. A system can be provided including an injection device, such as a glue gun, that is operably connected to a delivery catheter that can be advanced across a treatment zone in the vein. The delivery catheter can be used to deliver one, two, or more boluses of media (e.g., cyanoacrylate) to occlude the vein along different spaced-apart sections of the treatment zone. External compression can also be applied to the vein by a compression element, such as a hand or multifunctional ultrasound transducer, to occlude portions of the vein along the treatment zone prior to or during the introduction of the boluses of media.
摘要:
Methods, devices and systems are described for treating venous insufficiency in which the vein is compressed at least partially along a treatment zone. A system can be provided including an injection device, such as a glue gun, that is operably connected to a delivery catheter that can be advanced across a treatment zone in the vein. The delivery catheter can be used to deliver one, two, or more boluses of media (e.g., cyanoacrylate) to occlude the vein along different spaced-apart sections of the treatment zone. External compression can also be applied to the vein by a compression element, such as a hand or multifunctional ultrasound transducer, to occlude portions of the vein along the treatment zone prior to or during the introduction of the boluses of media.