Results 211 to 220 of about 1,653 (258)

CHARACTERIZATION OF DIELECTRIC ELASTOMER PLANAR ACTUATORS

Sensors and Microsystems, 2002
This work intends to extend the electromechanical characterisation of dielectric elastomer actuators. Planar actuators were realised with a 50m-thick film of an acrylic elastomer coated with compliant electrodes. The isotonic transverse strain, the isometric transverse stress and the driving current, due to a 2 s high voltage impulse, were measured for
CARPI, FEDERICO, P. Chiarelli, A. Mazzoldi, D. De Rossi   +3 more
openaire   +2 more sources

Contractile Hydrostatically Coupled Dielectric Elastomer Actuators

IEEE/ASME Transactions on Mechatronics, 2012
The so-called hydrostatically coupled dielectric elastomer actuators (HC-DEAs) have recently been described as a means to improve versatility and safety of electroactive polymer actuators made of DEs. HC-DEAs use an incompressible fluid that mechanically couples a DE-based active part to a passive part interfaced to the load.
CARPI, FEDERICO, Frediani, Gabriele, Rossi, Danilo De   +2 more
openaire   +1 more source

Materials for dielectric elastomer actuators

SPIE Proceedings, 2004
Dielectric elastomer actuators consist of an elastomer film sandwiched between compliant electrodes. They work as electrostatic actuators: when a large electric field is applied over the electrodes, the rubber is compressed and the elastomer film elongates in the film plane.
Peter Sommer-Larsen, Anne L. Larsen
openaire   +1 more source

Response of dielectric elastomer actuators

SPIE Proceedings, 2001
Elastomer films sandwiched between compliant electrodes work as electrostatic actuators when a large electric field is applied over the electrodes. We have analyzed the mechanical and electrical response of actuators to a sinusoidal varying driving voltage.
Peter Sommer-Larsen, Jacob C. Hooker, Guggi Kofod, Keld West, Mohammed Benslimane, Peter Gravesen   +5 more
openaire   +1 more source

Twisted Dielectric Elastomer stack Actuator

2016 13th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2016
The purpose of this research is to make an actuator which is easily adaptable to use as artificial muscle by improving structure of stack-type Dielectric Elastomer Actuator (DEA). In contrast with previous stack-type actuator, Single body Dielectric Elastomer stack Actuators (SDEAs) is connected as single body without external frame so that it can be ...
Ho Sang Jung, Sang Yul Yang, Kyeong Ho Cho, Min-Geun Song, Hyouk Ryeol Choi   +4 more
openaire   +1 more source

Compact Dielectric Elastomer Linear Actuators

Advanced Functional Materials, 2018
AbstractThe design and fabrication of a rolled dielectric elastomer actuator is described and the parametric dependence of the displacement and blocked force on the actuator geometry, elastomer layer thickness, voltage, and number of turns is analyzed. Combinations of different elastomers and carbon nanotube electrodes are investigated and optimized to
Huichan Zhao, Aftab M. Hussain, Mihai Duduta, Daniel M. Vogt, Robert J. Wood, David R. Clarke   +5 more
openaire   +2 more sources

Millimetre‐scale bubble‐like dielectric elastomer actuators [PDF]

Polymer International, 2009
AbstractHydrostatic coupling has recently been reported as a means to improve the versatility and safety of electromechanical actuators based on dielectric elastomers (DEs). Hydrostatically coupled DE actuators rely on an incompressible fluid that mechanically couples a DE‐based active part to a passive part interfaced to the load.
CARPI, FEDERICO, Frediani, Gabriele, Tarantino, Sergio, De Rossi, Danilo   +3 more
openaire   +2 more sources

Soft dielectric elastomer actuator micropump

Sensors and Actuators A: Physical, 2017
This paper presents a miniaturized soft dielectric elastomer actuator (DEA) micropump which was demonstrated in microfluidic application. A strain-induced pre-stretched DEA undergoes expansion when subjected to high voltage, providing a two-way actuation in the presence of a pull-up spring.
Mohd. Ghazali, F. A., Mah, C. K., Abu Zaiter, A., Chee, P. S., Mohamed Ali, M. S.   +4 more
openaire   +1 more source

Bending Dielectric Elastomer Actuators

ECS Meeting Abstracts
Dielectric Elastomer Actuators (DEAs) are a type of electroactive polymers that transform electric energy into mechanical work and are capable of large strains and high energy densities. DEAs are often described as “artificial muscles” because they exhibit strains, energy density, and responsiveness similar to natural human muscles.
Katelyn Wilson, Nikhil Deliwala, D. R. Clarke, Thiagarajan Soundappan   +3 more
openaire   +1 more source

Contractile folded dielectric elastomer actuators

SPIE Proceedings, 2007
New lightweight, compliant, reliable and cheap contractile linear actuators are demanded today for many fields of application, such as robotics, automation and biomedical disciplines. Within the family of electroactive polymers, dielectric elastomers are rapidly emerging as high-performance transduction materials, resulting particularly attractive in
CARPI, FEDERICO, De Rossi, D.
openaire   +1 more source