8 results about "Microactuator" patented technology

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.

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.

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.

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.