Concept

Matériau intelligent

Publications associées (81)

Research on self-sensing ability concerning a dielectric electroactive polymer

Electroactive Polymers (EAPs) are systems formed of three layers, one layer of stretchable dielectric polymer contained between two layers of soft electrodes. The operating principle of such polymers is that they deform them-self when they are placed into ...

2018

Fabrication and characterization of silicone-based dielectric elastomer actuators for mechanical stimulation of living cells

Herbert Shea, Samuel Rosset, Alexandre Poulin

Cellular biology is a promising field of application for dielectric elastomer actuators (DEAs) given that large strains are needed but only low forces are required. The development of devices compatible with standard cell culture protocols and equipment is ...

2018

Design of an Innovative Cylindrical Spring with a Negative Stiffness

Yves Perriard, Yoan René Cyrille Civet, Jonathan André Jean-Marie Chavanne

Interest in the dielectric electroactive polymer is growing in the medical field because of the large similarity with the biological muscles. With the objective to create an artificial pump based on DEAP, this paper presents the concept of an innovative sp ...

IEEE2018

Soft Robotic Grippers

Dario Floreano, Herbert Shea, Jun Shintake, Vito Cacucciolo

Advances in soft robotics, materials science, and stretchable electronics have enabled rapid progress in soft grippers. Here, a critical overview of soft robotic grippers is presented, covering different material sets, physical principles, and device archi ...

2018

Photopolymerizable bone filler material

Dominique Pioletti, Andreas Schmocker, Oriane Poupart

A photopolymerizable bone filler material comprising a fluid polymeric material, a photoinitiator and a plurality of solid, polymeric optical fibers is disclosed, wherein said optical fibers are used for both illumination and reinforcement of the entire ph ...

2018

Charge generation by ultra-stretchable elastomeric electrets

Frank Nüesch, Yee Song Ko

Novel piezoelectric elastomers are synthesized and their long term stability and piezoelectric properties are investigated. They are thin film composites of specially designed polymer nanoparticles with high glass transition temperatures (T-g) and side gro ...

Royal Soc Chemistry2017

Foldable Drones: from Biology to Technology

Dario Floreano, Stefano Mintchev, Jun Shintake

Current drones are developed with a fixed morphology that can limit their versatility and mission capabilities. There is biological evidence that adaptive morphological changes can not only extend dynamic performances, but also provide new functionalities. ...

SPIE2017

High Permittivity Silicones for Dielectric Elastomer Actuators

Simon Johannes Dünki

Many technical advances of modern society sprout from the creation of specially customized polymer materials exhibiting unique combinations of properties uncharted so far. Amid this plurality of highly versatile materials, the class of electroactive polyme ...

EPFL2017

Poleable Dielectric Elastomer Composites

Yee Song Ko

As part of the recent efforts on renewable energies, energy harvesting by exploiting environmental motions and vibrations to generate electricity is being enthusiastically developed as a novel kind of green energy source. Piezoelectric materials are a logi ...

EPFL2017

High-cycle electromechanical aging of dielectric elastomer actuators with carbon-based electrodes

Herbert Shea, Samuel Rosset, Samuel Schlatter, Christine Anne de Saint-Aubin

We present high-cycle aging tests of Dielectric Elastomer Actuators (DEAs) based on silicone elastomers, reporting on the time-evolution of actuation strain and of electrode resistance over millions of cycles. We compare several types of carbon-based elect ...

Institute of Physics2017

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