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Thomas Guillaume Martinez

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Related publications (39)

Adaptation of a solid-state-Marx modulator for electroactive polymer

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Morgan Almanza

Electroactive polymers show promising characteristic such as lightness, compactness, flexibility and large displacements making them a candidate for application in cardiac assist devices. This revives the need for quasi- square wave voltage supply switchin ...

2022

Improve the Time Response of Shape Memory NiTi Sheets Using Highly Conductive Elastomer Layers

Yves Perriard, Thomas Guillaume Martinez, Sofia Lydia Ntella, Marjan Ghorbani

Shape Memory Alloys (SMAs) have gained significant attention due to their high work density in order to fabricate compact and lightweight actuators. However, the major drawback of thermally activated SMAs is the time that takes for these materials to cool ...

IEEE2022

Soft Actuators for Facial Reanimation

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi, Amine Benouhiba

Facial paralysis is a challenging condition that alters a patient's ability to express emotion and communicate. Restoring facial movements thus has crucial implications for the patients' quality of life. This publication introduces an approach for artifici ...

IEEE2022

Characterization of Dielectric Elastomer Actuators: A Design of Experiments Approach

Yves Perriard, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi, Quentin Philippe Mario De Menech, Pooneh Mohaghegh, Armando Matthieu Walter

Dielectric Elastomer Actuators (DEAs) are recent type of smart materials, which transform electric energy into mechanical work. They show impressive performance as soft actuators. Capable of multidirectional actuation, large strain and high energy density, ...

IEEE2022

Study of the use of silver trace and improved flexibility in rolled Dielectric Elastomer Actuators

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Armando Matthieu Walter

Dielectric Elastomer Actuators (DEAs) are more and more used thanks to their stretchable and flexible properties. The fields of use are many, but the biomedical domain is particularly interesting in the case of artificial muscles. In DEAs, resistance is an ...

IEEE2022

Control-oriented modeling and analysis of tubular dielectric elastomer actuators dedicated to cardiac assist devices

Yves Perriard, Yoan René Cyrille Civet, Ning Liu, Thomas Guillaume Martinez, Armando Matthieu Walter

This paper deals with the control-oriented modeling of a multilayered dielectric elastomer actuator based tube. The actuator is clamped at both sides and performs a radial displacement. The hyperelastic deformation and the viscoelastic performance, togethe ...

2022

Influence of Axial Pre-stretch on Tubular Dielectric Elastomer Actuators

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Armando Matthieu Walter, Amine Benouhiba

Dielectric elastomer actuators (DEAs), also known as artificial muscles, are a sub-class of electroactive polymers (EAP). Due to their many qualities, such as high actuation strain, high bandwidth, high energy density, and a flexible body, they have shown ...

IEEE2022

A Cockcroft-Walton generator driven by wireless power transfer for implanted high-voltage generation

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Morgan Almanza

This paper presents a Cockcroft-Walton (CW) generator as a solution to generate an intermediate high voltage for the supply of a DEA cardiac assist device. This consists in fully passive converter allowing to output a DC signal from an alternative signal e ...

IEEE2021

Modelling and Fabrication of a Kirigami-Inspired Shape Memory Alloy Actuator

Yves Perriard, Sean Thomas, Thomas Guillaume Martinez, Marjan Ghorbani

Shape Memory Alloys (SMA) based actuators have increasingly been used in lightweight and compact actuators. In this paper, a novel kirigami-inspired SMA actuator is designed and presented. This work aims to show a novel way of fabricating large stroke flex ...

IEEE2021

Control-Free Mechanical Oscillator Powered by Shape Memory Alloys

Paolo Germano, Yves Perriard, Sean Thomas, Thomas Guillaume Martinez

Shape Memory Alloy (SMA) based actuators have been commonly used in applications that require being compact and lightweight. In this paper, the inherent stiffness of a flexure-based linear guide is used to create a bias-spring SMA actuator which further re ...

IEEE2021

Stretchable tubular device and use thereof as a counterpulsation device

Yves Perriard, Yoan René Cyrille Civet, Jonathan André Jean-Marie Chavanne, Thomas Guillaume Martinez, Morgan Almanza

The present invention is related to a stretchable tubular device (1) comprising at least one layer (Lx) of a stretchable polymer, a power supply (2) and a set of electrodes (3a, 3b) connected to said power supply (2). The power supply can supply at least a ...

2021

An untethered mechanically-intelligent inchworm robot powered by a shape memory alloy oscillator

Paolo Germano, Yves Perriard, Sean Thomas, Thomas Guillaume Martinez

Shape Memory Alloy (SMA) based actuators have become ideal candidates for use in compact and lightweight applications. These smart materials have often been referred to as artificial muscles due to their high work volume density. In this paper, a flexure-b ...

2021

Improved Electrical Behavior of Dielectric Elastomer Actuators

Yves Perriard, Yoan René Cyrille Civet, Jonathan André Jean-Marie Chavanne, Thomas Guillaume Martinez, Armando Matthieu Walter

Dielectric Elastomer Actuators (DEA) have been introduced two decades ago as a new soft actuator family. In the biomedical field, this technology is very interesting because the devices are similar to human muscles. The main interest of such technology is ...

IEEE2021

Designing compliant mechanisms composed of shape memory alloy and actuated by induction heating

Paolo Germano, Yves Perriard, Sean Thomas, Adrien Jean-Michel Thabuis, Thomas Guillaume Martinez

Shape Memory Alloys (SMAs) are a type of smart materials that reacts mechanically to heat. Due to their complex behavior, they are often used in a simple geometry such as wires. This constrains the output displacement of the alloy to a simple linear contra ...

2021

DEA Self-discharge Characterization for Low Duty Cycle Applications

Yves Perriard, Yoan René Cyrille Civet, Raphaël Johannes Charles Mottet, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi

This publication presents the characterization of self discharging Dielectric Elastomer Actuators (DEAs) in order to give place to low duty cycle applications, during which a DEA must remain actuated for long periods of time. DEAs typically present a low c ...

IEEE2021

Shape Memory Effect of Benchmark Compliant Mechanisms Designed With Topology Optimization

Yves Perriard, Sean Thomas, Adrien Jean-Michel Thabuis, Thomas Guillaume Martinez

Shape Memory Alloys (SMA) are a class of Smart Materials that are ideal for creating compact actuators. The complex nature of their behavior results in the use of these materials in simple geometries (wires, sheets) limiting their performances. A design me ...

IEEE2020

Multi-Output Compliant Shape Memory Alloy Bias-Spring Actuators

Yves Perriard, Sean Thomas, Adrien Jean-Michel Thabuis, Thomas Guillaume Martinez

Smart Materials such as Shape Memory Alloys (SMA) play a major role in creating Smart Actuators that are compact and high performing. Traditional SMA bias-spring actuators are only capable of a single linear output. Using topology optimization, compliant S ...

IEEE2020

Manufacturing and Tests of a Tubular Multilayer Dielectric Elastomer Actuator for an Impedance Pump

Yves Perriard, Yoan René Cyrille Civet, Jonathan André Jean-Marie Chavanne, Thomas Guillaume Martinez, David Moser, Francesco Clavica, Armando Matthieu Walter

During the last three decades, the field of electro active polymers (EAP) has seen a rapidly growing interest worldwide. These materials can exhibit many advantages, such as elasticity, high energy density, high dynamics and are often nicknamed artificial ...

2020

Identification of material parameters of a tubular dielectric elastomer actuator for a cardiac assist device

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

The recent development of Dielectric Elastomer Actuators (DEA) requires a new approach to the description of hyperelastic material when the architectures are more complex than a film of material. In this paper, we propose a new technique of identification ...

2020

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