Transparent active skin

Kwon, Hyeok-Yong; An, Kuang Jun; Kang, Junmo; Phuc, Vuong Hong; Toan, Nguyen Canh; Kim, Baek Chul; Chung, Jin A; Hong, Byung Hee; Choi, Jae‐Boong; Moon, Hyungpil; Koo, Jachoon; Nam, Jae‐Do; Choi, Hyouk Ryeol

doi:10.1117/12.880341

Cited by 2 publications

(3 citation statements)

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“…Thus they could find applications in biologically inspired robots, as well as human prosthetic or orthotic devices. Examples of DEA bio-mimetic robots include a fishlike propulsion airship [182] and inchworm robots [183], complex walking robots [184], transparent "active skins" [185] and motors for the eyeballs of an android face [186]. and other applications include (Figure 18), refreshable Braille and tactile displays [187][188][189], motion capture suits [190], micro-pumps [191][192][193][194], loudspeakers [195], variable focus lenses [196][197][198][199], active isolation devices for cancelation of vibrations [200,201] and even shape controllers of lightweight mirrors [202].…”

Section: Applications Of Deasmentioning

confidence: 99%

Increasing the performance of dielectric elastomer actuators: A review from the materials perspective

Romasanta

López–Manchado

Verdejo

2015

Progress in Polymer Science

407

268

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Electro-active polymers (EAP) are emerging as feasible materials to mimic muscle-like actuation. Among EAPs, dielectric elastomer (DE) devices are soft or flexible capacitors, composed of a thin elastomeric membrane sandwiched between two compliant electrodes, that are able to transduce electrical to mechanical energy, actuators, and vice versa, generators. Initial studies concentrated mainly on dielectric elastomer actuators (DEAs) and identified the electro-mechanical principles and material requirements for an optimal performance. Those requirements include the need for polymers with high dielectric permittivity and stretchability and low dielectric loss and viscoelastic damping. Hence, attaining elastomeric materials with those features is the focus of current research developments. This review provides a systematic overview of such research, highlighting the advances, challenges and future applications of DEAs.

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Section: Applications Of Deasmentioning

confidence: 99%

Increasing the performance of dielectric elastomer actuators: A review from the materials perspective

Romasanta

López–Manchado

Verdejo

2015

Progress in Polymer Science

407

268

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“…When a DE device is undergoing a uniaxial strain in the x 1 direction in addition to an electric charge, the total stress is determined based on the combined effects of both the mechanical stress and the Maxwell stress. For a general uniaxial thin film DE in tension experiencing constant electric charge, the Maxwell stress (11) is obtained based on the geometry resulting from the product of the stretch ratios where the stretch ratios are determined based on the constraint conditions of the device. For example, the electromechanically coupled Maxwell stress formulations for the limiting cases can be shown to be as follows.…”

Section: Electromechanical Stresses Due To Combined Stretch and Chargementioning

confidence: 99%

“…These are extremely elastic materials capable of strains exceeding 100% elongation and are electromechanically coupled through an electrostatic effect. 8 Examples of dielectric polymers are acrylic and silicone, 7 while electrode materials currently used in DE applications include carbon grease, 9 graphene, 10,11 silver, [12][13][14] and corrugated metal. 15,16 By exposing this elastomer capacitor to an electric field, an electrostatic stress (Maxwell stress) is induced, causing the elastomer to experience a mechanical strain.…”

Section: Introductionmentioning

confidence: 99%

Modeling the constraint effects of compliant electrodes in dielectric elastomers under uniaxial loading

Lai

Tan

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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Dielectric elastomers are composite thin film structures composed of a dielectric polymer between compliant electrodes. Previous hyperelastic models have not modeled the constraint effects of compliant electrodes on the lateral contraction of the dielectric material as it stretches, and are therefore unable to fully describe the electromechanical behavior of the dielectric elastomer or provide a means to understand the constraint effects. An empirical boundary coefficient is introduced to model these constraint effects on the lateral boundaries of the material under uniaxial tension. Employing an averaged stretch ratio concept, it is shown that this coefficient can be obtained from experimentally measurable geometric variables. Values for the boundary coefficients of sample dielectric elastomer films were obtained from experiments performed on a uniaxial test stand. Incorporating the boundary coefficient into the model formulation, a specific hyperelastic stress–strain relation is derived to describe the electromechanical behavior of dielectric elastomers under combined uniaxial tension and electrical loading. Comparison of the experimental and predicted values of the induced force in the axial direction due to the Maxwell stress based on the uniaxial model shows favorable agreement.

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Transparent active skin

Cited by 2 publications

References 0 publications

Increasing the performance of dielectric elastomer actuators: A review from the materials perspective

Increasing the performance of dielectric elastomer actuators: A review from the materials perspective

Modeling the constraint effects of compliant electrodes in dielectric elastomers under uniaxial loading

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