Publications de Samuel Rosset | EPFL Graph Search

Publications associées (58)

Metal Ion Implantation for the Fabrication of Stretchable Electrodes on Elastomers

Herbert Shea, Samuel Rosset, Muhamed Niklaus

We report on low-energy metal ion implantation by filtered cathodic vacuum arc to create highly deformable electrodes on polydimethylsiloxane (PDMS) membranes. Implantation leads to the creation of nanometer-size clusters in the first 50 nm below the surfa ...

Wiley-Blackwell2009

Dielectric elastomer generators that stack up

Herbert Shea, Samuel Rosset

This paper reports the design, fabrication, and testing of a soft dielectric elastomer power generator with a volume of less than 1 cm3. The generator is well suited to harvest energy from ambient and from human body motion as it can harvest from low frequ ...

Institute of Physics2015

Array of lenses with individually tunable focal-length based on transparent ion-implanted EAPs

Herbert Shea, Samuel Rosset, Muhamed Niklaus

We report on the fabrication and characterization of 2x2 arrays of mm-diameter PDMS lenses whose focal length can be electrically tuned. Dielectric elastomer actuators generally rely on carbon powder or carbon grease electrodes, which are not transparent, ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

Inkjet 3D printing of UV and thermal cure silicone elastomers for dielectric elastomer actuators

Herbert Shea, Samuel Rosset, Samuel Schlatter, David James McCoul

Dielectric elastomer actuators (DEAs) are an attractive form of electromechanical transducer, possessing high energy densities, an efficient design, mechanical compliance, high speed, and noiseless operation. They have been incorporated into a wide variety ...

Institute of Physics2017

Flexible and stretchable electrodes for dielectric elastomer actuators

Herbert Shea, Samuel Rosset

Dielectric elastomer actuators (DEAs) are flexible lightweight actuators that can generate strains of over 100 %. They are used in applications ranging from haptic feedback (mm-sized devices), to cm-scale soft robots, to meter-long blimps. DEAs consist of ...

Springer2013

Ion-implanted compliant and patternable electrodes for miniaturized dielectric elastomer actuators

Herbert Shea, Samuel Rosset, Muhamed Niklaus

This article presents metal ion implantation as an alternative technique to fabricate compliant electrodes for small-size dielectric elastomer actuators. When reducing the size of these actuators to below 1 cm, the ability to pattern the electrodes is adde ...

2008

A Foldable Antagonistic Actuator

Dario Floreano, Herbert Shea, Samuel Rosset, Jun Shintake, Bryan Edward Schubert

We report on an actuator based on dielectric elastomers that is capable of antagonistic actuation and passive folding. This actuator enables foldability in robots with simple structures. Unlike other antagonistic dielectric elastomer devices, our concept u ...

Institute of Electrical and Electronics Engineers2015

Metal Ion Implanted Compliant Electrodes in Dielectric Electroactive Polymer (EAP) Membranes

Herbert Shea, Samuel Rosset, Muhamed Niklaus

One of the key factors to obtain large displacements and high efficiency with dielectric electroactive polymer (DEAPs) actuators is to have compliant electrodes. Attempts to scale DEAPs down to the mm or micrometer range have encountered major difficulties ...

Trans Tech Publications Ltd2009

Peta-pico-Voltron: An open-source high voltage power supply

Samuel Rosset, Samuel Schlatter

We present the design (hardware + software) of “Peta-pico-Voltron”, a low-current high voltage power supply for electrostatic actuators. Developed primarily for dielectric elastomer actuators, it offers a low-cost solution to generate user controllable vol ...

2018

Metal ion implanted electrodes for dielectric elastomer actuators

Samuel Rosset

This thesis reports on the successful use of low-energy metal ion implantation to fabricate compliant electrodes for miniaturized dielectric elastomer actuators (DEAs, also known as artificial muscles). DEAs are elastomeric actuators capable of large defor ...

EPFL2008

Flexible Zinc-Tin Oxide Thin Film Transistors Operating at 1 kV for Integrated Switching of Dielectric Elastomer Actuators Arrays

Danick Briand, Herbert Shea, Samuel Rosset, Alexandre Poulin, Nadine Besse, Alexis Pierre Henri Marette

Flexible high-voltage thin- lm transistors (HVTFTs) operating at more than 1 kV are integrated with compliant dielectric elastomer actuators (DEA) to create a exible array of 16 independent actuators. To allow for high-voltage operation, the HVTFT implemen ...

Wiley-Blackwell2017

An ultra-fast mechanically active cell culture substrate

Herbert Shea, Samuel Rosset, Cristina Martin Olmos, Matthias Imboden, Alexandre Poulin, Francesca Sorba

We present a mechanically active cell culture substrate that produces complex strain patterns and generates extremely high strain rates. The transparent miniaturized cell stretcher is compatible with live cell microscopy and provides a very compact and por ...

Nature Research2018

An open-loop control scheme to increase the speed and reduce the viscoelastic drift of dielectric elastomer actuators

Samuel Rosset, Alexandre Poulin

We present a simple open-loop method to increase the response speed and suppress the viscoelastic creep of dielectric elastomer actuators. The parameters of the model can be extracted from two simple measurements: a strain vs. voltage ramp, and the strain ...

2019

Fabrication of zipping electrostatic actuators incorporating inkjet-printed layers

Herbert Shea, Samuel Rosset, Giulio Grasso

Zipping electrostatic actuators operate by bending flexible electrodes using electrostatic forces. This principle allows the use of a wide range of dielectric and conductive materials. Additive Manufacturing (AM) techniques can be used to fabricate these a ...

SPIE-INT SOC OPTICAL ENGINEERING2021

Inkjet Printing of Complex Soft Machines with Densely Integrated Electrostatic Actuators

Herbert Shea, Samuel Rosset, Samuel Schlatter, Giulio Grasso

A multimaterial inkjet printing method for integrated soft multifunctional machines is reported, combining dense arrays of electrostatic actuators, multilayer electrical routing, and complex networks of microfluidic channels in one printing process. Most a ...

2020

Flexible Active Skin: Large Reconfigurable Arrays of Individually Addressed Shape Memory Polymer Actuators

Herbert Shea, Samuel Rosset, Juan José Zarate, Nadine Besse

A high-resolution flexible active skin with a matrix of 32x24 individually addressable tactile pixels on a 4 mm pitch is reported, based on shape memory polymer (SMP) actuators. The intrinsic multistable nature of SMPs, and their more than hundred-fold var ...

Wiley2017

Small, fast, and tough: Shrinking down integrated elastomer transducers

Herbert Shea, Samuel Rosset

We review recent progress in miniaturized dielectric elastomer actuators (DEAs), sensors, and energy harvesters. We focus primarily on configurations where the large strain, high compliance, stretchability, and high level of integration offered by dielectr ...

Amer Inst Physics2016

Fabrication process of silicone-based dielectric elastomer actuators

Herbert Shea, Samuel Rosset, Oluwaseun Adelowo Araromi, Samuel Schlatter

This contribution demonstrates the fabrication process of dielectric elastomer transducers (DETs). DETs are stretchable capacitors consisting of an elastomeric dielectric membrane sandwiched between two compliant electrodes. The large actuation strains of ...

Journal of Visualized Experiments2016

Voltage control of the resonance frequency of dielectric electroactive polymer (DEAP) membranes

Herbert Shea, Samuel Rosset, Muhamed Niklaus

We report on the characterization, active tuning and modeling of the first mode resonance frequency of dielectric electroactive polymer (DEAP) membranes. Unlike other resonance frequency tuning techniques, the tuning procedure presented here requires no ex ...

Institute of Electrical and Electronics Engineers2008

Maximizing the displacement of compact planar dielectric elastomer actuators

Herbert Shea, Samuel Rosset, Oluwaseun Adelowo Araromi

We present a model and its experimental validation for the optimization of the in-plane displacement of a rigid platform mounted on a compact dielectric elastomer actuator. Unlike the situation in which the mechanical prestretch of the membrane is maintain ...

2015