Results 81 to 90 of about 13,556 (296)

Mechanical switching of ferro-electric rubber [PDF]

, 2008
At the A to C transition, smectic elastomers have recently been observed to undergo $\sim$35% spontaneous shear strains. We first explicitly describe how strains of up to twice this value could be mechanically or electrically induced in Sm-$C$ elastomers
Adams, J. M., Warner, M.
core   +2 more sources

Actuation response of polyacrylate dielectric elastomers [PDF]

SPIE Proceedings, 2001
Polyacrylate dielectric elastomers have yielded extremely large strain and elastic energy density suggesting that they are useful for many actuator applications. A thorough understanding of the physics underlying the mechanism of the observed response to an electric field can help develop improved actuators.
Guggi Kofod, Peter Sommer-Larsen, Roy Kornbluh, Ron Pelrine   +3 more
openaire   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

Advanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang, Byeongseok Ryu, Sujeong Ahn, Junhyub Kim, Myeonghun Jang, Jeong Ho Cho, Won‐Gun Koh, Hyungsuk Lee   +7 more
wiley   +1 more source

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Dielectric elastomers based on SEBS gel: The impact of adding kraft lignin on electro-mechanical performance

eXPRESS Polymer Letters
Thermoplastic elastomer gels based on styrenic triblock copolymers have been increasingly used as dielectric elastomers, particularly due to the possibility of tailoring their properties based on their composition.
Rogerio Ramos de Sousa Junior, Guilherme Elias Saltarelli Garcia, Leonardo Dalseno Antonino, Júlia Rocha Gouveia, Demetrio Jackson dos Santos, Danilo Justino Carastan   +5 more
doaj   +1 more source

Stereo-selective swelling of imprinted cholesteric networks

, 2003
Molecular chirality, and the chiral symmetry breaking of resulting macroscopic phases, can be topologically imprinted and manipulated by crosslinking and swelling of polymer networks.
A. R. Tajbakhsh, C. D. Hasson, E. M. Terentjev, H. Finkelmann, M. Warner, M. A. Osipov, P.-G. de Gennes, P.-G. de Gennes, P.-G. de Gennes, R. Zentel, S. Courty, W. Meier   +11 more
core   +1 more source

Swelling of PDMS Networks in Solvent Vapours; Applications for Passive RFID Wireless Sensors [PDF]

, 2015
The relative degree of swelling of a poly(dimethylsiloxane) (PDMS) network in organic vapours is demonstrated to be related to the chemical and physical properties of the organic compounds.
Abbasi, Altenberend, Balasubramanian, Barton, Barton, Benesi, Cazeca, Chatterjee, Clarson, Dissanayake, Dvornic, Fiddes, Finkenzeller, George, Graiver, Hansen, Hansen, Huang, Kataoka, Kim, Lee, Lindvig, Mark, Masaro, Oprea, Patel, Potyrailo, Potyrailo, Potyrailo, Potyrailo, Rakibet, Rao, Saleem, Sanchez, Seethapathy, Spietelun, Virtanen   +36 more
core   +1 more source

4D‐Printed Spin Crossover Metamaterials with Giant Programmable Positive or Negative Thermal Expansion

Advanced Materials, EarlyView.
Spin crossover composite filaments are implemented for the rational design of 4D‐printed mechanical metamaterials. The obtained bi‐material structures guided by a theoretical analysis based on analytical calculations and Finite Element Analysis simulations exhibit giant programmable positive or negative deformation with coefficients of thermal ...
Adelais Trapali, Yuteng Zhang, Seyed Ehsan Alavi, Nagham Mawassy, Raja Zulkarnain, Gábor Molnár, Lionel Salmon, Azzedine Bousseksou   +7 more
wiley   +1 more source

Dimensional effect of SrTiO3 particles on functional performance optimization of polydimethylsiloxane-based composites for dielectric elastomer actuators

Materials Research Express, 2020
Dielectric elastomer materials have a great application potential in electromechanical sensing and energy-harvesting fields. However, the realization of high electro-actuation properties under a relatively low electric field is still a critical challenge.
Xin Wei, Shuyan Gao, Na Zhang, Hang Zhao
doaj   +1 more source

Monolithic shape-programmable dielectric liquid crystal elastomer actuators

, 2019
Macroscale robotic systems have demonstrated great capabilities of high speed, precise, and agile functions. However, the ability of soft robots to perform complex tasks, especially in centimeter and millimeter scale, remains limited due to the ...
Aghakhani, Amirreza, Davidson, Zoey S., Guo, Yubing, Hines, Lindsey, Shahsavan, Hamed, Sitti, Metin, Xia, Yu, Yang, Shu   +7 more
core   +1 more source