Front Matter: Volume 8340

Bar‐Cohen, Yoseph

doi:10.1117/12.966008

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SPIE Proceedings

2012

DOI: 10.1117/12.966008

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Front Matter: Volume 8340

Yoseph Bar‐Cohen¹

Abstract: The effect of different fillers on the mechanical and dielectric properties of soft elastomers has been investigated. It was found that the addition of a small amount of silica fillers would increase the Young's modulus significantly but not simultaneously increase the tear strength sufficiently for processing as thin films. Addition of nanoclay and barium titanate nanoparticles to the soft elastomers was shown to be very favorable for the enhancement of the dielectric properties without increasing the Young's… Show more

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Cited by 3 publications

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Conjugated Polymer Actuators and Devices: Progress and Opportunities

2019

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Conjugated polymers (CP), as exemplified by polypyrrole (PPy), are intrinsically conducting polymers with potential for development as soft actuators or 'artificial muscles' for numerous applications. Significant progress has been made in our understanding of these materials and the actuation mechanisms, aided by the development of physical and electrochemical models. Current research is focused on developing applications utilizing the advantages that CP actuators have (e.g. low driving potential, easy to miniaturise) over other actuating materials and on developing ways of overcoming their inherent limitations. CP actuators are available as films, filaments/yarns and textiles, operating in liquids as well as in air for, ready for use by engineers. This review initially highlights the milestones made in understanding these unique materials and their development as actuators. The primary focus is on the recent progress, developments, applications, and future opportunities for improvement and exploitation of these materials possessing a wealth of multifunctional properties.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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Conjugated Polymer Actuators and Devices: Progress and Opportunities

2019

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Gossamer timescapes: a design-led investigation into electro-active and light responsive textiles for the home

Mossé¹

2018

Smart Mater. Struct.

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This paper introduces Gossamer Timescapes: practice-based and design-led experimentations exploring how the design of self-actuated textiles can inform new poetical and cultural possibilities for smart technologies. More specifically, this empiric research focuses on the role shape-changing textiles can play in informing a culture of interconnectivity within the context of the Western home. In other words, how smart textiles can encourage a holistic culture in which nature, humans and their technologies belong to the same contexture. Developed at the intersection of textile design, architecture and materials science, this interdisciplinary research relies on the use of three polymer technologies: thin film photovoltaics, light-responsive liquid crystals and dielectric elastomers at different stages of maturity. The primary outcomes of this research are three projects: Photovoltaic Mashrabiya—a textile membrane changing shape and producing electricity in response to solar patterns, Photokinetic Textiles—the probing of light-induced shape-changing textile swatches and Reef—a self-actuated ceiling that responds to the wind. The paper reports on the challenges and opportunities of transferring such technologies from the research laboratory to the design workshop. Together these outcomes not only suggest new opportunities for smart technologies in terms of use, aesthetics or crafting processes but also demonstrate the value of interdisciplinary collaborations involving science and design.

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Examination of factors to improve the performance of dielectric elastomer transducers and their applications

Chiba,

Waki,

Takeshita

et al. 2024

Smart Mater. Struct.

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Actuators, sensors, and generators using dielectric elastomers are inexpensive and light, and can be easily to structured, multilayer-able, and very efficient. They are　ideal for an eco-energy society. In the latest technology, an only 0.15 g dielectric elastomer can lift an 8 kg weight by 1 mm or more in just 88 ms. the near future, it can be applied to efficient drive systems of humanoid robots, systems that assist in driving the motors of electric vehicles, and various industrial machinery. It is highly likely that very thin and miniaturized dielectric elastomer sensors would also support the driving of motors. In addition, dielectric elastomer generators, which can be applied to various external forces, have attracted significant attention as a renewable energy source. In this paper, we discuss the R&D status of dielectric elastomers using mainly commercially available elastomer materials, give examples of issues, and discuss and their potential applications, and usefulness.The excellent performance of the dielectric elastomers mentioned above is largely due to their carbon-based electrodes. In this study, various carbon materials (including carbon grease, carbon black, MWCNT, and SWCNT) and their dielectric elastomer performances were compared.

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Front Matter: Volume 8340

Cited by 3 publications

References 17 publications

Conjugated Polymer Actuators and Devices: Progress and Opportunities

Conjugated Polymer Actuators and Devices: Progress and Opportunities

Gossamer timescapes: a design-led investigation into electro-active and light responsive textiles for the home

Examination of factors to improve the performance of dielectric elastomer transducers and their applications

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