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Herbert Shea

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Publications associées (163)

Stretchable composite monolayer electrodes for low voltage dielectric elastomer actuators

Samuel Rosset, Herbert Shea, Francesca Sorba, Xiaobin Ji

2018

The NERD setup: assessing the life time of electrodes for dielectric elastomer transducers

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

2018

An electromagnetic actuator

Herbert Shea, Juan José Zarate

The present invention concerns an electromagnetic actuator (2) for a haptic display (1). The actuator (2) comprises: a) a first, movable permanent magnetic element (5), the first magnetic element (5) comprising a first latching layer facing side, a second ...

2018

Device having a plurality of latching micro-actuators and method of operating the same

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

An actuator device including a plurality of transducer actuators, and a common pneumatic actuation mechanism for shaping the plurality of transducer actuators, wherein each actuator of the plurality of transducer actuators includes a shape memory polymer m ...

2018

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 ...

Wiley2018

An ultra-fast mechanically active cell culture substrate

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

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

DextrES: Wearable Haptic Feedback for Grasping in VR via a Thin Form-Factor Electrostatic Brake

Herbert Shea, Ronan Julien Hinchet

We introduce DextrES, a flexible and wearable haptic glove which integrates both kinesthetic and cutaneous feedback in a thin and light form factor (weight is less than 8g). Our approach is based on an electrostatic clutch generating up to 20 N of holding ...

ASSOC COMPUTING MACHINERY2018

Soft Biomimetic Fish Robot Made of Dielectric Elastomer Actuators

Dario Floreano, Herbert Shea, Jun Shintake, Vito Cacucciolo

This article presents the design, fabrication, and characterization of a soft biomimetic robotic fish based on dielectric elastomer actuators (DEAs) that swims by body and/or caudal fin (BCF) propulsion. BCF is a promising locomotion mechanism that potenti ...

2018

Electroadhesive device, system and method for gripping

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

A device for electroadhesion and conversion of electrical energy into mechanical energy, for example electrostatic actuation, is provided, including a soft polymeric dielectric support having at least two sets of overlapping electrodes patterned respective ...

2017

Full integration of a dielectric elastomer actuator with a flexible 1 kV thin-film transistor

Samuel Rosset, Herbert Shea, Danick Briand, Alexis Pierre Henri Marette, Christine Anne de Saint-Aubin

2017

Understanding Graphics on a Scalable Latching Assistive Haptic Display Using a Shape Memory Polymer Membrane

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

2017

Charge Neutralization and Direct Thrust Measurements from Bipolar Pairs of Ionic- Electrospray Thrusters

Herbert Shea, Daniel George Courtney

lectrospray (ES) thrusters are unique in their ability to emit both positive and negative beams, each contributing similarly to thrust. Spacecraft charging could be prevented without a dedicated neutralizer if currents of simultaneously emitted opposing po ...

2017

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

Samuel Rosset, Herbert Shea, 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

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

Samuel Rosset, Herbert Shea, 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

Assessing the degradation of compliant electrodes for soft actuators

Samuel Rosset, Herbert Shea, Alexandre Poulin, Christine Anne de Saint-Aubin

We present an automated system to measure the degradation of compliant electrodes used in dielectric elastomer actuators (DEAs) over millions of cycles. Electrodes for DEAs generally experience biaxial linear strains of more than 10%. The decrease in elect ...

American Institute of Physics2017

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

Samuel Rosset, Herbert Shea, Alexandre Poulin, Nadine Besse, Danick Briand, 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

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

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

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

Microfluidic Platform for Seawater Desalination by Coulometric Removal of Chloride Ions through Printed Ag Electrodes

Herbert Shea, Peter Van der Wal, Marianna Fighera

This paper reports on the electrochemical characterization and comparison of printable silver inks for the fabrication of planar electrodes to integrate in a microfluidic platform for in situ desalination of seawater prior to detection of nutrients in mari ...

Electrochemical Soc Inc2017

Fabrication process of silicone-based dielectric elastomer actuators

Samuel Rosset, Herbert Shea, 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

Using pot-magnets to enable stable and scalable electromagnetic tactile displays

Herbert Shea, Juan José Zarate

We present the design, fabrication, characterization and psychophysical testing of a scalable haptic display based on electromagnetic (EM) actuators. The display consists of a 4x4 array of taxels, each of which can be in a raised or a lowered position, thu ...

2016

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