Abstract:
A micro-electromechanical actuator and related methods of use that use a pair of electrodes separated by a linkage. The linkage is biased to a neutral position wherein the electrodes are spaced apart from each other, but also allows at least one electrode to move toward the other electrode when an appropriate force, such as voltage from the power source, is applied to the electrodes. The linkage is sized and shaped to allow the electrodes to move together when a defined threshold voltage is applied by the power source, thereby allowing the micro-elecromechanical actuator to function as a manufacturing quality testing device or a micromechanical actuator in other applications. The actuator may be fabricated simultaneously with other micromechanical and micro-electromechanical components on the same substrate using conventional semi-conductor and micro-machining manufacturing equipment.
Abstract:
The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting longitudinal-axis opposingly with the tiltable body being interposed, support the tiltable body flexibly and rotatably about the twisting longitudinal axis relative to the frame member, and include a plurality of planar portions, compliant directions of which intersect each other when viewed along a direction of the twisting longitudinal axis. A center of gravity of the tiltable body is positioned on the twisting longitudinal axis of the torsion springs.
Abstract:
An electrostatic bimorph actuator includes a cantilevered flexible bimorph arm that is secured and insulated at one end to a planar substrate. In an electrostatically activated state the bimorph arm is generally parallel to the planar substrate. In a relaxed state, residual stress in the bimorph arm causes its free end to extend out-of-plane from the planar substrate. The actuator includes a substrate electrode that is secured to and insulated from the substrate and positioned under and in alignment with the bimorph arm. An electrical potential difference applied between the bimorph arm and the substrate electrode imparts electrostatic attraction between the bimorph arm and the substrate electrode to activate the actuator. As an exemplary application in which such actuators could be used, a microelectrical mechanical optical display system is described.
Abstract:
A microelectromechanical (MEM) apparatus is disclosed which has a platform that can be elevated above a substrate and tilted at an arbitrary angle using a plurality of flexible members which support the platform and control its movement. Each flexible member is further controlled by one or more MEM actuators which act to bend the flexible member. The MEM actuators can be electrostatic comb actuators or vertical zip actuators, or a combination thereof. The MEM apparatus can include a mirror coating to form a programmable mirror for redirecting or switching one or more light beams for use in a projection display. The MEM apparatus with-the mirror coating also has applications for switching light beams between optical fibers for use in a local area fiber optic network, or for use in fiber optic telecommunications or data communications systems.
Abstract:
A micro electromechanical differential actuator is comprised of a suspension arm structure and/or a bridge structure to make a two-degree-of-freedom and bi-directional motion. The actuator support base can make out-of-plane or in-plane vertical and horizontal motions. The invention is applicable in optical micro electromechanical devices such as optical switches, variable optical attenuators, optical tunable filters, modulators, tunable VCSEL's, grating modulators, micro displays, and RF switches.
Abstract:
The invention provides an electrostatically-controllable diffraction grating including a plurality of electrically isolated and stationary electrodes disposed on a substrate. At least one row of a plurality of interconnected actuation elements is provided, with each actuation element suspended, by a corresponding mechanically constrained support region, over the substrate by a vertical actuation gap and including a conducting actuation region connected to the corresponding support region and disposed in a selected correspondence with at least one substrate electrode. A mirror element is provided, for at least one actuation element in at least one row of actuation elements, including an optically reflecting upper surface, and being vertically suspended over a corresponding actuation element by a mechanically constrained mirror support region that is connected to the corresponding actuation element and that defines a vertical mirror gap. A mirror deflection region connected to the mirror support region and is free to be deflected through the mirror gap. The mirror gap is less than the actuation gap of a corresponding actuation element and is selected to produce controlled and stable displacement of the actuation region of a corresponding actuation element through a displacement range to a specified point in the actuation gap when an actuation voltage is applied between an actuation region and a corresponding stationary electrode. This enables diffraction of a beam of light incident on the grating as the light beam is reflected from the upper surfaces of the mirror elements.
Abstract:
A micro-electromechanical actuator and related methods of use that use a pair of electrodes separated by a linkage. The linkage is biased to a neutral position wherein the electrodes are spaced apart from each other, but also allows at least one electrode to move toward the other electrode when an appropriate force, such as voltage from the power source, is applied to the electrodes. The linkage is sized and shaped to allow the electrodes to move together when a defined threshold voltage is applied by the power source, thereby allowing the micro-elecromechanical actuator to function as a manufacturing quality testing device or a micromechanical actuator in other applications. The actuator may be fabricated simultaneously with other micromechanical and micro-electromechanical components on the same substrate using conventional semi-conductor and micro-machining manufacturing equipment.
Abstract:
A micro-electromechanical actuator and related methods of use that use a pair of electrodes separated by a linkage. The linkage is biased to a neutral position wherein the electrodes are spaced apart from each other, but also allows at least one electrode to move toward the other electrode when an appropriate force, such as voltage from the power source, is applied to the electrodes. The linkage is sized and shaped to allow the electrodes to move together when a defined threshold voltage is applied by the power source, thereby allowing the micro-electromechanical actuator to function as a manufacturing quality testing device or a micromechanical actuator in other applications. The actuator may be fabricated simultaneously with other micromechanical and micro-electromechanical components on the same substrate using conventional semi-conductor and micro-machining manufacturing equipment.
Abstract:
Micromachine systems are provided. An embodiment of such a micromachine system includes a substrate that defines a trench. First and second microelectromechanical devices are arranged at least partially within the trench. Each of the microelectromechanical devices incorporates a first portion that is configured to move relative to the substrate. Methods also are provided.
Abstract:
A microfluidic device adapted for use with a power source is disclosed. The device includes a substrate and a heater member. The substrate and heater member form a first portion. A second portion is formed adjacent to the first portion. The second portion includes a high activating power polymer portion, at least one resin layer and a shield member. The second portion is selectively shaped to form a thermal expansion portion. A diaphragm member encapsulates the thermal expansion portion so that when power is applied to the heater portion, the high activating power polymer expands against the diaphragm member, causing the diaphragm member to deflect. This device is adapted for use as a microactuator or a blocking microvalve.