Abstract:
A electromechanical relay device (100) comprising a source electrode (102), a beam (104) mounted on the source electrode at a first end and electrically coupled to the source electrode; a first drain electrode (112) located adjacent a second end of the beam, wherein a first contact (110) on the beam is arranged to be separated from a second contact (112) on the first drain electrode when the relay device is in a first condition; a first gate electrode (106arranged to cause the beam to deflect,to electrically couple the first contact and the second contact such that the device is in a second condition; and wherein the first and second contacts are each coated with a layer of nanocrystalline graphite.
Abstract:
The present invention generally relates to a MEMS device in which silicon residues from the adhesion promoter material are reduced or even eliminated from the cavity floor. The adhesion promoter is typically used to adhere sacrificial material to material above the substrate. The adhesion promoter is then removed along with the sacrificial material. However, the adhesion promoter leaves silicon based residues within the cavity upon removal. The inventors have discovered that the adhesion promoter can be removed from the cavity area prior to depositing the sacrificial material. The adhesion promoter which remains over the remainder of the substrate is sufficient to ad¬ here the sacrificial material to the substrate without fear of the sacrificial material delaminating. Because no adhesion promoter is used in the cavity area of the device, no silicon residues will be present within the cavity after the switching element of the MEMS device is freed.
Abstract:
The present invention relates to thin membranes (such as graphene windows) and methods of aligned transfer of such thin membranes to substrates. The present invention further relates to devices that include such thin membranes.
Abstract:
A nonvolatile nano-electromechanical system device is provided and includes a cantilever structure, including a beam having an initial shape, which is supported at one end thereof by a supporting base and a beam deflector, including a phase change material (PCM), disposed on a portion of the beam in a non-slip condition with a material of the beam, the PCM taking one of an amorphous phase or a crystalline phase and deflecting the beam from the initial shape when taking the crystalline phase.
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.