Optimized mechanical interface design for multilayer DE stack-transducers

Krüger, Tim; Maas, Jürgen

doi:10.1117/12.2613318

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…[44] With only moderate dependence on material properties, it should be possible to use the batch spray and stamp process with a wide range of elastomers, and with a range of elastomer deposition processes already common to MDEA fabrication, such as spin-coating, [29,40] spray deposition, [31] and dry-film stacking. [45] The latter may be particularly appealing, since the main constraint on total MDEA fabrication time using the batch-spray and stamp-transfer method is currently the sequential deposition, degas, and cure time of the elastomer. These steps take 2, 4, and 5 min, respectively, with the P7670 elastomer and spin-coating elastomer deposition method primarily used in this work.…”

Section: Figure 2 A)mentioning

confidence: 99%

Batch‐Sprayed and Stamp‐Transferred Electrodes: A New Paradigm for Scalable Fabrication of Multilayer Dielectric Elastomer Actuators

Cohen

Kollosche

Yuen

et al. 2022

Adv Funct Materials

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Multilayer dielectric elastomer actuators have a wide range of potential applications, but their development and commercial implementation have been hindered by existing manufacturing processes. Existing processes are low-throughput, limited in area, and/or can only process a narrow range of elastomers. This study presents a novel fabrication paradigm that overcomes these challenges: instead of sequentially patterning electrodes directly onto successive elastomer layers, electrode stamps are patterned onto a carrier film in an independent batch-spray process and the electrodes are then stamp-transferred onto each elastomer layer. By modularizing the production and assembly of electrodes, a laboratory-scale implementation of the process achieves a throughput of 15 layers h −1 , a maximum electrode size of 300×300 mm, and tuning-free compatibility with a wide range of elastomers. The batch-spraying paradigm also provides the unique capability to evaluate and modify electrodes before they are assembled into a multilayer; a method of mechanically treating the electrodes is employed to increase the breakdown strength of Elastosil P7670 devices from 15.7 to 33.5 V µm −1 . The electrodes are conductive up to a strain of more than 200% and add negligible stiffness to the multilayer structure. The capabilities of this process to produce useful devices are demonstrated with a large-area loudspeaker and an actuator with 60 active layers.

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Section: Figure 2 A)mentioning

confidence: 99%

Batch‐Sprayed and Stamp‐Transferred Electrodes: A New Paradigm for Scalable Fabrication of Multilayer Dielectric Elastomer Actuators

Cohen

Kollosche

Yuen

et al. 2022

Adv Funct Materials

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Manufacturing Process for Multilayer Dielectric Elastomer Transducers Based on Sheet-to-Sheet Lamination and Contactless Electrode Application

2023

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Dielectric elastomer transducers (DETs) consist of thin elastomer films and compliant conductive electrodes on each side. Several DE-based systems, e.g., DE actuators, loudspeakers or sensors, have great potential in industrial applications. Different manufacturing processes for DE-based transducers have been realized so far. An alternative manufacturing process, based on sheet-to-sheet lamination of pre-fabricated elastomer films, appears promising for the manufacturing of large numbers of DETs, as, on the one hand, the commercially available elastomer films produced are characterized by homogeneous and reproducible properties and, on the other hand, the curing time during processing can be avoided. However, the handling of thin elastomer films and a controlled film transfer onto a surface is a challenge, as pre-stretch and wrinkles can easily occur. The presented sheet-to-sheet lamination mechanism facilitates controllable film handling well, whereby a high number of DE layers can be achieved. This paper focuses on the developed, automated film lamination of pre-cut film sheets and the electrode application via a jetting system, representing core components of the corresponding overall manufacturing process of DE laminates. The process realization on a laboratory scale is presented and manufactured DET specimens investigated for validation purposes.

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Optimized mechanical interface design for multilayer DE stack-transducers

Cited by 2 publications

References 17 publications

Batch‐Sprayed and Stamp‐Transferred Electrodes: A New Paradigm for Scalable Fabrication of Multilayer Dielectric Elastomer Actuators

Batch‐Sprayed and Stamp‐Transferred Electrodes: A New Paradigm for Scalable Fabrication of Multilayer Dielectric Elastomer Actuators

Manufacturing Process for Multilayer Dielectric Elastomer Transducers Based on Sheet-to-Sheet Lamination and Contactless Electrode Application

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