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Zipping it up: DEAs independent of the elastomer's electric breakdown field

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Sensory Feedback for Prosthetic Hand Users

Christian Enz, Huaiqi Huang, Tao Li, Jörn Justiz

The proposed project targets the restoration of a natural sense of touch to persons using hand prostheses. Current myoelectrical upper limb prostheses normally lack tactile feedback, which limits their functionalities and user acceptance. This work propose ...

2015

Pump it up

Herbert Shea, Samuel Rosset, Luc Maffli

We report on the use of zipping actuation applied to dielectric elastomer actuators to microfabricate mm-sized pumps. The zipping actuators presented here use electrostatic attraction to deform an elastomeric membrane by pulling it into contact with a rigi ...

SPIE2012

Lead-Free Relaxor-Like 0.75Bi0.5K0.5TiO3– 0.25BiFeO3 Ceramics with Large Electric Field-Induced Strain

Dragan Damjanovic

Dense and phase-pure ferroelectric ceramics of 75 mol.% Bi0.5K0.5TiO3 - 25 mol.% BiFeO3 are prepared by the conventional solid state reaction method. Their crystal structure is analyzed and discussed. The dielectric and piezoelectric properties of the cera ...

Taylor & Francis2012

Multilayer Dielectric Elastomer Actuators with Ion Implanted Electrodes

Herbert Shea, Muhamed Niklaus, Samin Akbari

We present the design, fabrication process and characterization of multilayer miniaturized polydimethylsiloxane (PDMS)-based dielectric elastomer diaphragm actuators. The conductive stretchable electrodes are obtained by lowenergy metal ion implantation. T ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Vertical electrostatically 90° turning flaps for reflective MEMS display

Nico de Rooij, Wilfried Noell, Fabio Jutzi

A new kind of MEMS reflective display is being developed having high contrast and reflectivity, better than on printed paper. The system is based on novel vertical flaps, which can be electrostatically turned by 90° to horizontal position. After fabricatio ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Arrays of 100μm x 100μm dielectric elastomer actuators to strain the single cells

Herbert Shea, Samin Akbari

Dielectric Elastomer Actuators (DEA) are compliant devices capable of generating large percentage strains with sub-second response times. Miniaturizing DEAs is challenging principally because of the need for mu m-scale compliant electrodes. Employing low-e ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2011

Elastomer Composites for Actuator Applications

Martin Molberg

Dielectric elastomers are highly promising as functional materials for the rapidly developing field of flexible actuator and generator technology. They offer a unique combination of low densities and large reversible deformations of up to more than 100% in ...

EPFL2010

Reliable MEMS Actuators for Driving Large Microsystems

Nicolas Bernard Golay

Nowadays many consumer electronic devices are using small engines (micromotors). Thanks to technological innovation, the components can be imbedded into numerous portable systems. The key factors for a nomadic integration are: reduction of power consumptio ...

EPFL2010

High Breakdown Field Dielectric Elastomer Actuators Using Encapsulated Polyaniline as High Dielectric Constant Filler

Martin Molberg

A novel method allowing rapid production of reliable composites with increased dielectric constant and high dielectric strength for dielectric elastomer actuators (DEA) is reported. The promising approach using composites of conductive particles and insula ...

Wiley-Blackwell2010

Ion-implanted compliant electrodes used in dielectric electroactive polymer actuators with large displacement

Herbert Shea, Samuel Rosset, Muhamed Niklaus

Metal ion implantation is shown here as an effective technique to fabricate highly compliant electrodes at room temperature on polymer substrates. By implanting 5 keV gold ions in polydimethylsiloxane we have fabricated micron-scale electrodes that conduct ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2009