Results 241 to 250 of about 3,300 (296)

Folded dielectric elastomer actuators

Smart Materials and Structures, 2007
Polymer-based linear actuators with contractile ability are currently demanded for several types of applications. Within the class of dielectric elastomer actuators, two basic configurations are available today for such a purpose: the multi-layer stack and the helical structure.
CARPI, FEDERICO, Salaris, Claudio, De Rossi, Danilo   +2 more
openaire   +2 more sources

Granularly Coupled Dielectric Elastomer Actuators

IEEE/ASME Transactions on Mechatronics, 2011
Dielectric elastomer actuators (DEAs) have been demonstrated to represent today a high-performance technology for electroactive polymer mechatronics. As a means to improve versatility and safety of DEAs, so-called “hydrostatically coupled” DEAs (HC-DEAs) have recently been shown to offer new opportunities.
CARPI, FEDERICO, Frediani, Gabriele, Nanni, Massimo, De Rossi, Danilo   +3 more
openaire   +3 more sources

Helical dielectric elastomer actuators

Smart Materials and Structures, 2005
This paper presents a new type of contractile polymer-based electromechanical linear actuator. The device belongs to the class of dielectric elastomer actuators, which are typically capable of undergoing large deformations induced by an applied electric field.
CARPI, FEDERICO, Migliore, Antonio, Serra, Giorgio, De Rossi, Danilo   +3 more
openaire   +2 more sources

Simulation of Networked Dielectric Elastomer Balloon Actuators

IEEE Robotics and Automation Letters, 2016
A dielectric elastomer is able to act as an actuator when subjected to an electric field. However, the allowable deformation of dielectric elastomer actuators is severely limited by the material failures. To extend the actuation range, this letter investigates a network of two interconnected dielectric elastomer balloon actuators, each prestretched by ...
Feifei Chen 0002, Michael Yu Wang
openaire   +3 more sources

Modelling and Experimental Validation of Buckling Dielectric Elastomer Actuators

ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2, 2011
Buckling dielectric elastomer actuators are special type of electro-mechanical transducers that exploit electro-elastic instability phenomena to generate large out-of-plane axial-symmetric deformations of circular membranes made of non-conductive rubbery material.
Vertechy, Rocco, Frisoli, Antonio, Bergamasco, Massimo, CARPI, FEDERICO, Frediani, Gabriele, De Rossi, Danilo   +5 more
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Biomimetic Dielectric Elastomer Actuators

The First IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics, 2006. BioRob 2006., 2006
Polymer actuators offer attractive properties as biomimetic devices capable of mimicking functional characteristics of biological muscles and structures. This paper presents the ongoing research activities and the latest results achieved in our lab in the development of soft actuators made of a particular class of electroactive polymers, consisting of ...
CARPI, FEDERICO, De Rossi, Danilo
openaire   +1 more source

Actuation capability of a dielectric elastomer balloon actuator

2016 12th IEEE International Conference on Control and Automation (ICCA), 2016
Dielectric elastomers show great promise for soft actuators. As the allowable deformation range of dielectric elastomers is strictly limited by the material failures, the actuation ability of a dielectric elastomer actuator is accordingly bounded. Although the material failures have been well studied, little literature has been released regarding the ...
Feifei Chen 0002, Michael Yu Wang
openaire   +1 more source

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

Dielectric elastomer actuators for tactile displays

World Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2009
In this paper we discuss dielectric elastomer actuators (DEA) as one of the most promising technologies in electroactive polymers (EAP). For tactile display applications a large number of actuator elements is essential. The multilayer technology presented here offers the possibility to build up independent actuators and arrays at a high density within ...
Marc Matysek, Peter Lotz, Thomas Winterstein, Helmut F. Schlaak   +3 more
openaire   +1 more source