A sensor actuator is provided. The sensor actuator includes a movable body on which an image sensor having an imaging plane is disposed; a fixed body configured to accommodate the movable body; and a driver configured to provide a driving force to move the image sensor, wherein the driver includes a wire portion having a plurality of wires of which lengths change when power is applied to the plurality of wires, wherein each of the plurality of wires is configured to have a first end coupled to the fixed body and a second end coupled to the movable body, and wherein one of the first end and the second end of each of the plurality of wires is connected to the fixed body or the movable body through an elastic portion.

An airfoil arrangement for a gas turbine engine may include a clearance device using a shape memory alloy movable to provide clearance between an airfoil and one or more other components of the gas turbine engine. The clearance device may be formed as part of a fan blade. The arrangement may be configured to reduce overall weight and dimensions of the gas turbine engine.

An actuator assembly (4001) includes a first part (4002), a second part (4004), a bearing arrangement (4003) and a drive arrangement (4005). The bearing arrangement (4003) includes first to fourth flexures (40151, 40152, 40153, 40154) arranged about a primary axis (4009) passing through the actuator assembly (4001). The bearing arrangement (4003) supports the second part (4004) on the first part (4002). The second part (4004) is tiltable about first and/or second axes (4011, 4012) which are not parallel and which are perpendicular to the primary axis (4009). The drive arrangement (4005) includes four lengths of shape memory alloy wire (40101, 40102, 40103, 40104). The four lengths of shape memory alloy wire (40101, 40102, 40103, 40104) are coupled to the second part (4004) and to the first part (4002). The bearing 15 arrangement (4003) is configured to convert lateral force(s) normal to the primary axis (4009) generated by the drive arrangement (4005) into tilting of the second part (4004) about the first and/or second axes (4011, 4012). Each of the first to fourth flexures (40151, 40152, 40153, 40154) has a first end (4016) connected to the first part (4002) and a second end (4017) connected to the second part (4004). Each of the first to fourth flexures (40151, 40152, 40153, 40154) includes a feature (1016) configured to increase a first compliance of that flexure (40151, 40152, 40153, 40154) to displacement of the respective second end (4017) towards the respective first end (4016). The first compliance is less than a second compliance of that flexure (40151, 40152, 40153, 40154) to 25 displacement of the respective second end (4017) parallel to the primary axis (4009).

A display apparatus includes a display panel including a display area, in which a plurality of sub-pixels are disposed, and a sensor area at the display area, a first hole at in the sensor area; a first member disposed on a front surface of the display panel; a second member disposed at a rear surface of the display panel and including the first hole; a third member disposed at a rear surface of the second member and including a second hole overlapping the first hole; and a fourth member covering an inner surface of the first hole and a portion of the second member exposed through the second hole.

A vehicle radiator assembly includes: a common inlet tank having a high temperature inlet chamber and a low temperature inlet chamber; a common outlet tank spaced apart from the common inlet tank and including a high temperature outlet chamber and a low temperature outlet chamber; a high temperature radiator core including a plurality of high temperature tubes connecting the high temperature inlet chamber and the high temperature outlet chamber, and a plurality of high temperature cooling fins arranged with the plurality of high temperature tubes; a low temperature radiator core including a plurality of low temperature tubes connecting the low temperature inlet chamber and the low temperature outlet chamber, and a plurality of low temperature cooling fins arranged with the plurality of low temperature tubes; and a bimetal interposed between the high temperature radiator core and the low temperature radiator core.

With applications such as soft robotics being severely hindered by the lack of strong soft actuators, the invention provides a new soft-actuator material—Electrically Actuated Hydraulic Solid (EAHS) material—with a stress-density that outperforms any known electrically-actuatable material. One type of actuator is fabricated by making a closed cell that acts as highly paralyzed version of a standard paraffin actuator. Each cell exhibits microscopic expansion, which is summed to produce macroscopic motion. The closed cellular nature of the material allows the system to be cut and punctured and still operate. It can be produced in a lab or industrial scale, and can be formed using molding, 3D printing or cutting.

With applications such as soft robotics being severely hindered by the lack of strong soft actuators, the invention provides a new soft-actuator material—Electrically Actuated Hydraulic Solid (EAHS) material—with a stress-density that outperforms any known electrically-actuatable material. One type of actuator is fabricated by making a closed cell that acts as highly paralyzed version of a standard paraffin actuator. Each cell exhibits microscopic expansion, which is summed to produce macroscopic motion. The closed cellular nature of the material allows the system to be cut and punctured and still operate. It can be produced in a lab or industrial scale, and can be formed using molding, 3D printing or cutting.

A hybrid actuation device that includes a first plate coupled to a second plate, a shape memory alloy wire coupled to the first plate, and an artificial muscle positioned between the first plate and the second plate. The artificial muscle includes a housing having an electrode region and an expandable fluid region, a first electrode and a second electrode each disposed in the electrode region of the housing and a dielectric fluid disposed within the housing. The expandable fluid region of the housing is positioned apart from a perimeter of the first plate and the second plate.

A shape memory alloy actuator assembly (2) is disclosed. The actuator assembly comprises a support (21), a first stage (22) moveable in at least two different non-parallel directions in a first plane relative to the support, a first set of at least two shape memory alloy wires (27.sub.1) configured to move the first stage in the first plane, a second stage (23) moveable in at least two different non-parallel in a second plane parallel to or coplanar with the first plane relative to the first stage, and a second set of at least two shape memory alloy wires (27.sub.2) configured to move the second stage in the second plane. The first stage is coupled to the support via the first set of shape memory alloy wires and the second stage is coupled to the first stage via the second set of shape memory alloy wires such that movement of the second stage in the second plane with respect to the support is a combination of movement of the first stage relative to support and the second stage relative to the first stage.

The present application relates to a stepwise discrete actuator (10) with two shape memory alloy wires (15, 15′) used in an antagonistic configuration to drive a slider (13) that moves a toothed element (12) through tooth-engaging fingers (131, 132) that are spaced at rest by a distance F that is shorter than the distance T between adjacent teeth by an amount sufficient for a stationary finger lifter (14) to lift that of the slider fingers (131, 132) that does not engage the movable toothed element (12) such that it clears the teeth of the latter.