15 results about "Microactuator" patented technology

To provide a tuning device that can increase the applicability of frequencies that can be communicated by a communication device.SOLUTION: A tuning device is provided that uses a micro-actuator to tune the characteristics of an IC chip. The tuning device includes a dielectric member and driving unit, as the micro-actuator. The dielectric member is made of a dielectric, and the driving unit is configured to change the distance between the dielectric member and the IC chip.SELECTED DRAWING: Figure 1

A segmented alphanumeric includes a display panel, at least one linearly actuated platform, and display elements. Each display element passes through an orifice in the display panel to generate protruded and segmented alphanumeric characters in combination with other extended display elements. A microactuator array is displaceable by the linearly actuated platform and includes electromagnets and rotors. Each rotor is mounted for rotation in at least one direction between an active state and an inactive state by at least one associated electromagnet. Each display element is displaced through the orifice by actuation of the linearly actuated platform via a respective rotor when the respective rotor is rotated into its active state and to evade displacement by the rotor when the rotor is rotated into its inactive state.

The present application discloses a method and device for constructing a liquid-cooled radiator microchannel with integrated bypass control, which is used to solve the energy waste problem caused by fixed high-resistance microchannels. The method of the present application includes: establishing a three-dimensional geometric model of the liquid-cooled radiator, the three-dimensional geometric model including a main channel for processing peak heat load conditions, a bypass channel for processing low heat load conditions, and an SMA microactuator arranged in the bypass channel; defining the fluid domain, solid domain, and actuator domain respectively, and configuring an SMA constitutive model for the actuator domain to describe the relationship between temperature, stress, and phase change; establishing a bidirectional coupling relationship between the fluid domain, solid domain, and actuator domain based on the SMA constitutive model to form a digital twin model; applying a simulated heat load that changes with time to the digital twin model to obtain the simulation performance parameters of the liquid-cooled radiator under dynamic conditions; iteratively optimizing the target design parameters based on the simulation performance parameters to obtain the target design parameters.

We provide microactuator assemblies and suspensions for disk drives. [Solution] The microactuator assembly comprises at least one piezoelectric element, a first electrode located on a first side surface of the at least one piezoelectric element, having a first height extending along the entire length of the first side surface of the at least one piezoelectric element, and a second electrode located on a second side surface of the at least one piezoelectric element, having a second height smaller than the first height of the first electrode, extending shorter than the entire length of the second side surface of the at least one piezoelectric element, and configured to bend when a voltage is applied to resist the constraint exerted by the bonding adhesive.

PZT microactuators, such as those used in hard disk drives, have a constraining layer bonded to the side opposite the PZT mounting surface. The constraining layer is made of a stiff, resilient material, such as stainless steel. The constraining layer covers most or all of the top surface of the PZT and provides electrical connections to the PZT not covered by the constraining layer. The constraining layer increases the effective stroke length by reducing the bending of the attached PZT, or further increases the effective stroke length by reversing the sign of bending. The constraining layer may be one or more active layers of PZT material that act in the opposite direction to the main PZT layer. The constraining layer may be thinner than the main PZT layer.

A multiplanar electromagnetic array is disclosed herein, where the array includes a first electromagnetic coil in a first plane, a second electromagnetic coil in a second plane, and a third electromagnetic coil in a third plane. A microactuator is configured to energize electromagnetic coils in the array in sequence, thereby forming a moving electromagnetic field that moves a permanent magnet positioned above the multiplanar electromagnetic array. Movement of the permanent magnet effectuates desired movement of a bead that is in a channel of an immunoassay device.

There is disclosed a leaky-wave antenna device comprising a first metasurface comprising a first dielectric substrate having a first array of conductive elements and a second metasurface comprising a second dielectric substrate having a second array of conductive elements. The antenna device further comprises a conductive ground plane, a micro-actuator, and a feed comprising a pair of switchable dipoles. The first and second metasurfaces and the conductive ground plane are in a stacked arrangement and substantially parallel to one another, with the first metasurface located between the second metasurface and the conductive ground plane. A spacing between the conductive ground plane and the first metasurface is adjustable by operation of the micro-actuator. The feed is disposed between the first and second metasurfaces at a location corresponding to a centre of the first and second arrays. The leaky-wave antenna device may be operated to steer a beam over a wide range by selective energising of the pair of dipoles and by adjusting the spacing between the conductive ground plane and the first metasurface.

An actuator includes a drive mechanism, a shift mechanism, a screw rod mechanism and a base. The drive mechanism includes a first output shaft and a second output shaft. The shift mechanism includes a gear bracket and a first transmission gear. The first transmission gear has a rotation center extending in a first direction. The screw rod mechanism includes a number of screw assemblies, and each screw assembly includes a push rod. The second output shaft is configured to be able to drive the gear bracket to move along a second direction, so that the first transmission gear is able to mate with different screw rod assemblies. The first output shaft is configured to be able to drive the first transmission gear to rotate around its own rotation center, and then drive the screw assembly to move, so as to move the push rod.

This invention belongs to the field of metal additive manufacturing heat treatment technology, and discloses a heat treatment method, product, and application for improving the performance of additively manufactured Fe-Ga alloys. The method includes: solution treatment, holding the laser-additively manufactured Fe-Ga alloy at 700–850℃ for 0.5–3 hours under argon protection; brine cooling, directly immersing the solution-treated Fe-Ga alloy in room-temperature brine to cool to room temperature; aging treatment, holding the brine-cooled Fe-Ga alloy at 280–320℃ for 1–12 hours; and water cooling treatment, water cooling the aged Fe-Ga alloy to room temperature. <100> The area of ​​BD texture should account for no less than 75%; this method retains strong texture. <100> Simultaneously with texturing, precipitation was suppressed by brine cooling, and combined with aging treatment to obtain a size of 5–10 nm and a number density ≥3.0 × 10⁻⁶. 10 mm ‑2 The L60 precipitate phase reduces the alloy's saturation magnetostriction coefficient λ. s The concentration reaches 290 ppm or higher. This application also provides Fe-Ga alloy products obtained by this method and their applications in magnetostrictive sensors or microactuators.

The disclosure relates, in various embodiments, to devices, articles, and methods for jetting an active pharmaceutical ingredient into a patient using an electrically-triggered microactuator powered by a reactive material such as an aluminium-nickel nanofilm.

This application provides a self-supporting piezoelectric nanofilm microactuator and its fabrication method. The fabrication method includes: forming an insulating layer on the front side of a substrate; forming a bottom electrode; forming a piezoelectric thin film with a submicron thickness; thinning the back side of the substrate; forming a top electrode with a nanometer thickness on the piezoelectric thin film; sequentially patterning the piezoelectric thin film, bottom electrode, and insulating layer to define the device shape; coating a continuous polymer protective layer on the front side of the device; forming a mask on the back side of the device to define a release window; temporarily bonding the front side of the device wafer to a carrier wafer; etching the back side according to the release window, using the insulating layer as the etching termination layer to form a deep cavity on the back side and release the support under the cantilever beam; debonding and cleaning the front side; removing the sacrificial layer, releasing the device, and obtaining the self-supporting piezoelectric nanofilm microactuator. This application can achieve low-voltage compatibility between the device and on-chip electronics and achieve high-yield manufacturing of submicron piezoelectric thin film microactuators.

The application discloses a preparation and processing method of an optical tunable organ chip, and the method comprises the following steps: preparing soft channel A and B templates; pouring a processed polymer composite material into the prepared soft channel A template to obtain an initial organ chip channel to be processed; performing scanning and processing on the upper surface of the initial organ chip channel from bottom to top by using a femtosecond laser two-photon polymerization method to obtain a three-dimensional micro actuator; and performing post-processing on the initial organ chip with the three-dimensional micro actuator; and bonding the soft channel A and the soft channel B of the initial organ chip with the three-dimensional micro actuator to obtain the optical tunable organ chip.

Provided is a disc device that can achieve an external vibration suppression function that is compatible with the performance of an actuator, changes in the direction of external vibrations, and the like, in a disc device that has a two-stage actuator. The disc device detects vibrations from the outside, and generates a first actuator correction amount that is based on the vibrations and a coefficient. In addition, the disc device calculates a first operation amount that is based on the operation amount of the actuator (3) and the first actuator correction amount, and calculates a second actuator operation amount that is based on the operation amount of the micro actuator (16). The disc device calculates a current position that is based on the first operation amount and the second actuator operation amount. The disc device updates the coefficient of a filter in accordance with a position error and a vibration value that is based on the vibrations and a learning filter (36).

The invention relates to the technical field of ESD (Electro-Static Discharge) protection, in particular to a lead frame packaging system with common-mode and differential-mode ESD protection functions, which comprises a core protection unit, an environment sensing unit; a parameter adjusting unit; the intelligent control unit comprises a microcontroller; the microcontroller is configured to receive signals from the sensors and obtain environmental parameters based on the signals; based on the environmental parameters, calculating through a multi-parameter fusion algorithm to obtain a comprehensive environmental risk value; generating corresponding control instructions according to different risk levels of the comprehensive environment risk value; and based on the control instruction, the micro actuator is controlled to drive the conductive assembly to move so as to synchronously and dynamically adjust the overlapping area of the conductive assembly and the differential mode protection teeth and the coupling distance between the conductive assembly and the common mode protection rib. According to the invention, the intelligent protection of sensing the environment characteristics in real time, intelligently evaluating the risk state and autonomously adjusting the protection parameters can be realized.

A micro actuator for inner ear injection and sampling surgery is provided. The microneedle puncture mechanism module is embedded in the driving and sensing module. The driving and sensing module is installed on the high-precision linear driving module. The end-effector mechanism module is installed in the front of the driving and sensing module. The microneedle puncture mechanism module passes through the end operating mechanism module and extends. An endoscope camera module located in the end-effector mechanism module provides real-time images of a surgical process. A tension sensor in the driving and sensing module monitors tension changes of steel wires in real time to ensure safe interaction with the intra-ear environment.