On the dynamics of a micro-gripper subjected to electrostatic and piezoelectric excitations

Kivi, Araz Rezaei; Azizi, Saber

doi:10.1016/j.ijnonlinmec.2015.07.012

Cited by 12 publications

(2 citation statements)

References 44 publications

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“…The novel optimized microactuator is shown in Figure 1. [34] Electrostatic and piezoelectric In Section 2, the design, modeling, and simulation of the proposed microgripper are shown.…”

Section: Design Concept and Simulationmentioning

confidence: 99%

Z-Shaped Electrothermal Microgripper Based on Novel Asymmetric Actuator

et al. 2022

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Based on a V-shaped microactuator with a pair of beams, modifications were made to the length and width of a microactuator to observe the effects. A theoretical approach and numerical characterization of the modified microactuator were performed. Its performance was compared to a similar microactuator with equal beam widths, and a V-shaped microactuator. The proposed microactuator, fed at 2 V, compared to the V-shaped actuator, showed a 370.48% increase in force, but a 29.8% decrease in displacement. The equivalent von Mises stress level increased (until 74.2 MPa), but was below the silicon ultimate stress. When the modified microactuator was applied to the proposed microgripper, compared to the case using a V-shaped actuator, the displacement between the jaws increased from 0.85 µm to 4.85 µm, the force from 42.11 mN to 73.61 mN, and the natural frequency from 11.36 kHz to 37.99 kHz; although the temperature increased, on average, from 42 °C up to 73 °C, it is not a critical value for many microobjects. The maximum equivalent von Mises stress was equal to 68.65 MPa. Therefore, it has been demonstrated that the new modified microactuator with damping elements is useful for the proposed microgripper of novel geometry, while a reduced area is maintained.

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“…The novel optimized microactuator is shown in Figure 1. [34] Electrostatic and piezoelectric In Section 2, the design, modeling, and simulation of the proposed microgripper are shown.…”

Section: Design Concept and Simulationmentioning

confidence: 99%

Z-Shaped Electrothermal Microgripper Based on Novel Asymmetric Actuator

et al. 2022

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“…While limited by manufacturing process, actuation method and volume limitation, the microgripper needs simple structure and special actuators to be easily fabricated and actuated. Up to now, electrostatic effect [3,6,7], electromagnetic effect [8], electro-thermal effect [9][10][11], pneumatic scheme [12], magnetic field [4,13], piezoelectric materials [14][15][16][17], shape memory alloy (SMA) [18,19], ionic polymer metal composites (IPMC) [5,[20][21][22], carbon nanotube/polymer composites [23] are all studied to actuate micro-grippers. As the scale of actuators in the microgripper does not always directly match the scale of the microgripper finger, most electrostatic, electro-thermal and piezoelectric solutions need complex and appropriate mechanical structure to convert electric energy to the movement of the micro-gripper.…”

Section: Introductionmentioning

confidence: 99%

A remotely driven and controlled micro-gripper fabricated from light-induced deformation smart material

Huang

Tian

et al. 2016

Smart Mater. Struct.

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Micro-gripper is an important tool to manipulate and assemble micro-scale objects. Generally, as micro-gripper is too small to be directly driven by general motors, it always needs special driving devices and suitable structure design. In this paper, two-finger micro-grippers are designed and fabricated, which utilize light-induced deformation smart material to make one of the two fingers. As the smart material is directly driven and controlled by remote lights instead of lines and motors, this light-driven mode simplifies the design of the two-finger micro-gripper and avoids special drivers and complex mechanical structure. In addition, a micro-manipulation experiment system is set up which is based on the light-driven micro-gripper. Experimental results show that this remotely light-driven micro-gripper has ability to manipulate and assemble micro-scale objects both in air and water. Furthermore, two micro-grippers can also work together for cooperation which can further enhance the assembly ability. On the other hand, this kind of remotely controllable micro-gripper that does not require on-board energy storage, can be used in mobile micro-robot as a manipulation hand.

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