Abstract:
A carbon nanotube assembly comprises a plurality of carbon nanotubes arranged into a patterned frame (10) and extending from a base (33) of the patterned frame to a face (31) of the patterned frame, the patterned frame having a height of at least about 10 µm or greater. At least one passage (14) extends through or is defined in the patterned frame, the at least one passage extending from the base of the patterned frame to the face of the patterned frame. An interstitial material at least partially fills interstices between at least some of the carbon nanotubes.
Abstract:
A MEMS thermal switch is disclosed which couples a hot, expanding beam to a cool flexor beam using a slideably engaged tether, and bends the cool, flexor beam by the expansion of the hot beam. A rigidly engaged tether ties the distal ends of the hot, expanding beam and the cool, flexor beam together, whereas the slideably engaged tether allows the hot, expanding beam to elongate with respect to the cool, flexor beam, without loading the slideably engaged tether with a large shear force. As a result, the material of the tether can be made stiffer, and therefore transmit the bending force of the hot, expanding beam more efficiently to the cool, flexor beam.
Abstract:
Es wird ein in einem integrierten Dünnschichtverfahren herstellbares mikromechanisches Bauelement vorgeschlagen, welches auf der Oberfläche eines Substrats als Mehrschichtaufbau erzeugt und strukturiert werden kann. Für den Mehrschichtaufbau werden zumindest zwei Metallschichten vorgesehen, die vom Substrat und gegeneinander durch Zwischenschichten getrennt sind. Elektrisch leitende Verbindungsstrukturen sorgen für einen elektrischen Kontakt der Metallschichten untereinander und mit einer im Substrat angeordneten Schaltungsanordnung. Die für einen Trägheitssensor, ein Mikrofon oder einen elektrostatischen Schalter einsetzbare freischwingende Membran kann zur Verbesserung ihrer mechanischen Eigenschaften auf allen Oberflächen mit Anpass- und Passivierungsschichten versehen werden, die beim Schichterzeugungsprozess beziehungsweise beim Aufbau des Mehrschichtaufbaus mit abgeschieden und strukturiert werden. Vorteilhaft werden dafür Titannitrid-Schichten eingesetzt.
Abstract:
The RF MEMS switch comprising micromechanical switching means that are carried by a substrate (1) and that can be actuated between two positions: a first position (off-state/ figure 1) and a second position (on- state), and actuation means for actuating the position of the switching means. The micromechanical switching means comprise a flexible membrane (6) which is freely supported by support means (3), which is bendable under the action of the actuation means (7), and which can freely slide relatively to the support means (3) during its bending movement.
Abstract:
A micro-scale interconnect device with internal heat spreader and method for fabricating same. The device includes first and second arrays of generally coplanar electrical communication lines. The first array is disposed generally along a first plane, and the second array is disposed generally along a second plane spaced from the first plane. The arrays are electrically isolated from each other. Embedded within the interconnect device is a heat spreader element. The heat spreader element comprises a dielectric material disposed in thermal contact with at least one of the arrays and a layer of thermally conductive material embedded in the dielectric material. The device is fabricated by forming layers of electrically conductive, dielectric, and thermally conductive materials on a substrate. The layers are arranged to enable heat energy given off by current-carrying communciation lines to be transferred away from the communciation lines.
Abstract:
The present invention generally relates to a MEMS device having a plurality of cantilevers that are coupled together in an anchor region and/or by legs that are coupled in a center area of the cantilever. The legs ensure that each cantilever can move/release from above the RF electrode at the same voltage. The anchor region coupling matches the mechanical stiffness in all sections of the cantilever so that all of the cantilevers move together.
Abstract:
A MEMS deviceis disclosed, comprising a micro-machined bulk body (BB) and a membrane (MM) fixed thereto. The membrane is cut preferably by laser from a flat sheet of metal and bonded to the bulk body.
Abstract:
Systems and methods for forming an electrostatic MEMS plate switch include forming a deformable plate on a first substrate, forming the electrical contacts on a second substrate, and coupling the two substrates using a hermetic seal. The deformable plate may have at least one shunt bar located at a nodal line of a vibrational mode of the deformable plate, so that the shunt bar remains relatively stationary when the plate is vibrating in that vibrational mode. The hermetic seal may be a gold/indium alloy, formed by heating a layer of indium plated over a layer of gold. Electrical access to the electrostatic MEMS switch may be made by forming vias through the thickness of the second substrate.