Self-Deformable Flexible Mems Tweezer Made of Poly (Vinylidene Fluoride) /Ionic Liquid Gel with Electrical Measurement Capability

Abstract

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Self-Deformable Flexible MEMS Tweezer Composed of Poly(Vinylidene Fluoride)/Ionic Liquid Gel for Electrical Measurements and Soft Gripping

“…The SLIG actuator always bent to the anode side, which was positively charged, as shown in Fig. 3 [1]. This was because the cations in IPMCs based on EMIMTFSI diffused faster than the anions [16].…”

“…Particularly, we previously reported an actuator based on this novel "ionic gel." This actuator delivered a displacement of 7 mm, which was 88 % of the total length of the actuator, at 1.5 V (V DC ) [1]. This actuator had one of the highest normalized strains among state-of-the-art IPMC actuators at the lowest operating voltage.…”

“…M ICROGRIPPERS are expected to be the nextgeneration devices for various applications such as manipulation, assembly, or pick-and-place tasks by grabbing the microobjects [1]. Different methods of their actuations have been studied such as piezoelectric [2]- [4], electrostatic [5], [6], electrothermal [4], [7], [8] and ionic polymer-metal composite (IPMC) [9]- [12] actuators.…”

“…This device, equipped with a self-deformable flexible cantilever, is capable of gripping a 3D target of even spherical structures with minimum force to closely perform adequate electrical measurements. An example of the proposed tweezer demonstrating gripping and electrical observation is an organism [1]. Microelectrode array-type two-dimensional (2D) devices are commonly used to detect electrical responses from organisms [13], [14].…”

“…This assembly of nm-scale silver wires has higher flexibility and conductivity than sheet-form metal electrodes. The combination of the PVDF-TrFE/EMIMTFSI gel with AgNWs using acetone as the solvent is unique and has, to the best of our knowledge, only been used by us [1]. Particularly, we previously reported an actuator based on this novel "ionic gel."…”