Publications de Thomas Guillaume Martinez

Thermomechanical constitutive modeling of the Kirigami-inspired shape memory alloy

Yves Perriard, Thomas Guillaume Martinez, Marjan Ghorbani

Shape memory alloys (SMAs) are unique materials capable of recovering predefined shapes through reversible phase transformations between austenite and martensite phases. This behavior enables SMAs to exhibit the shape memory effect and pseudoelasticity, al ...

2025

Towards Artificial Muscle Implants: Structured Reinforcement of Dielectric Elastomers

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

Dielectric elastomer actuators (DEAs) are a recent type of smart materials that show impressive performances as soft actuators, making them a promising technology for the development of implantable artificial muscles and soft robotic devices. Notably, they ...

IOP Publishing Ltd2025

Inversing the actuation cycle of dielectric elastomer actuators for a facial prosthesis

Yves Perriard, Yoan René Cyrille Civet, Paolo Germano, Alexis Boegli, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi, Quentin Philippe Mario De Menech

Dielectric Elastomer Actuators (DEAs) are a type of smart material described as compliant capacitors. They show impressive performances as soft actuators, such as a high strain and fast response. Nonetheless, replicating natural muscle function with DEAs h ...

Society of Photo-Optical Instrumentation Engineers (SPIE)2024

Improvement of Shape Memory Alloy (NiTi) Actuation Frequency Using Highly Thermally Conductive Metal Layer

Yves Perriard, Thomas Guillaume Martinez, Marjan Ghorbani

In this paper, we investigate a novel passive approach to improve the actuation frequency of Shape Memory Alloys (SMAs) with the Kirigami-inspired design using a thin layer of highly thermally conductive material. By depositing an 80 nm layer of gold on th ...

Institute of Electrical and Electronics Engineers Inc.2024

Investigation of buckling instabilities in fiber-reinforced DEAs

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

Artificial muscles, designed to replicate the movements of natural biological muscles, hold significant promise in the fields of robotics and prosthetics. Recent advancements have led to the development of fiber-reinforced actuators, drawing inspiration fr ...

Elsevier BV2024

Post-Paralysis Upper Facial Movement Restoration in Real Time using Soft Actuators

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi, Quentin Philippe Mario De Menech

Facial paralysis is a challenging condition, and current treatments rely on invasive transplant surgeries using a two-stage free muscle transfer procedure. The use of artificial muscles is a novel, less invasive approach, allowing faster recovery and more ...

Institute of Electrical and Electronics Engineers Inc.2024

Frequency response of fiber reinforced DEAs

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi, Markus Koenigsdorff

Dielectric Elastomer Actuators (DEAs) have emerged as versatile and promising devices for a multitude of applications, including soft robotics, haptic interfaces, and artificial muscles. DEAs are an interesting soft actuator technology due to their high en ...

Society of Photo-Optical Instrumentation Engineers (SPIE)2024

Novel para-aortic cardiac assistance using a pre-stretched dielectric elastomer actuator

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Francesco Clavica, Armando Matthieu Walter, Silje Ekroll Jahren

Objectives We propose an evolution of a dielectric elastomer actuator based cardiac assist device that acts as a counterpulsation system. We introduce a new pre-stretched actuator and implant the device in a graft bypass between the ascending and descendin ...

2024

Dielectric elastomer actuator-based valveless pump as Fontan failure assist device: introduction and preliminary study

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Francesco Clavica, Armando Matthieu Walter, Amine Benouhiba, Silje Ekroll Jahren

OBJECTIVES: Fontan failure refers to a condition in which the Fontan circulation, a surgical procedure used to treat certain congenital heart defects, becomes insufficient, leading to compromised cardiac function and potential complications. This in vitro ...

Oxford Univ Press2024

Characterisation of Polymer Materials for the Development of an Artificial Urethra

Yves Perriard, Yoan René Cyrille Civet, Thomas Guillaume Martinez, Stefania Maria Aliki Konstantinidi, Amine Benouhiba, Quentin Philippe Mario De Menech

Low Urinary Tract Dysfunctions (LUTD) and in particular Urinary Incontinence (UI) is a medical condition affecting millions of people worldwide. In this context researchers and engineers performed tests on porcine and human urethras. However, ethical conce ...

Institute of Electrical and Electronics Engineers Inc.2024