Results 91 to 100 of about 3,300 (296)

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source

Force measurements of planar dielectric elastomer actuators

Soft actuators, such as dielectric elastomer actuators, are often optimized with a focus on achieving maximum deformation and flexibility. However, for practical use and integration into various applications, the generated force and the achieved work are
Holzer, Simon, Perriard, Yves, Civet, Yoan, Konstantinidi, Stefania   +3 more
core   +1 more source

Healable Dielectric Elastomer Actuator With Premature Breakdown Warning Function for Information Transmission Encryption and Human‐Machine Interaction

Advanced Science
Dielectric elastomer actuators (DEAs), regarded as artificial muscles, are used as actuators or sensors in artificial visual systems, haptic equipment, and human‐robot interaction.
Yanze Liu, Shilin Luo, Jiawei Zhao, Lei Xu, Zhong‐Zhen Yu, Dan Yang   +5 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Interfacing dielectric elastomer actuators with liquids [PDF]

, 2015
Methods and materials for liquid encapsulation in thin (19 μm) silicone membranes are presented in this work. A set of 12 liquids including solvents, oils, silicone pre-polymers and one ionic liquid are experimentally tested.
Maffli, Luc, Herbert Shea, Alexandre Poulin, Shea, Herbert, Rosset, Samuel, Luc Maffli, Poulin, Alexandre, Samuel Rosset   +7 more
core   +1 more source

Advancing soft robotics: recent progress in dielectric elastomer and fluid actuators

npj Robotics
Soft robots offer an alternative to traditional rigid-bodied counterparts due to their mechanical compliance, adaptability, and enhanced safety. Particularly, soft dielectric-based actuators (i.e., dielectric elastomer and fluid actuators) enable ...
Md Harun Or Rashid Molla, Jinxin Chen, Chengyi Xu   +2 more
doaj   +1 more source

Material Selection and Geometric Design for Few‐filament Shape Memory Polymer Yarns for Force Generation

Advanced Materials Technologies, EarlyView.
A custom shape memory polymer material selection process relates quantitative application criteria (e.g., compression garment yarns) to material characterization information. The selected materials are manufactured into yarn geometries, which expand the design space by creating structural stress‐strain profiles beyond the nominal material stress‐strain
Michaela Andrews, Susan Mantell, Julianna Abel   +2 more
wiley   +1 more source

Model‐Based Synchronization of Dielectric Elastomers and Membrane Pumps for Performance‐Optimized, Space‐Efficient, and Application‐Specific Pump Design

Engineering Reports
This work presents a new approach to designing high‐performance and efficient pumps based on dielectric elastomer actuators. By considering the entire system including load from the beginning of the design process, the advantages of dielectric elastomers
M. Baltes, D. Bruch, P. Motzki
doaj   +1 more source

Morphology‐Driven Electromechanical Performance of Graphene‐Based Electrofluids for Emerging Soft Electronic Systems

Advanced Materials Technologies, EarlyView.
Here, two types of electronic components are presented: a strain sensor and a stable resistor. Electrofluids properties are tuned to match these behaviors by selecting the type of filler. We show that the morphology of the filler together with its oxygen content are the key parameters to create electrical and mechanical networks with distinct responses.
Dominik S. Schmidt, Paolo Fortugno, Claudia‐F. López‐Cámara, Hartmut Wiggers, Lola González‐García   +4 more
wiley   +1 more source

Dynamic analysis of dielectric elastomer actuators

, 2011
Dielectric elastomer actuators (DEAs) with a typical sandwich structure of electrode-elastomer-electrode arrangement provide large deformation. DEAs outperform most large displacement actuators in terms of light weight, low cost, and high efficiency. The
Bai-Xiang Xu, Ralf Müller, Markus Klassen, Xu, Bai-Xiang, Müller, Ralf, Gross, Dietmar, Klassen, Markus, Dietmar Gross   +7 more
core   +1 more source