Armando Matthieu Walter

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Dielectric elastomer actuator augmented aorta (DEA) represents a novel approach with high potential for assisting a failing heart. The soft tubular device replaces a section of the aorta and increases its diameter when activated. The hemodynamic interactio ...

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 ...

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 ...

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, ...

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 ...

Facial paralysis is a highly burdening condition, resulting in a patient's inability to move his mimic musculature on one or both sides of his face. This condition compromises the patient's communication and facial expressions, and thus dramatically reduce ...

Pumps play a crucial role in sustaining life by facilitating fluid circulation within the human body. This article presents the design and characterization of a high-performance tubular dielectric elastomer pump. The study investigates three distinct pump ...

Dielectric elastomer actuators (DEAs) have raised interest due to their remarkable capabilities in various applications, such as soft robotics, haptic feedback systems, and biomedical devices. To harness the full potential of DEAs, the choice of the electr ...

Dielectric Elastomer Actuators (DEAs) are a type of soft actuators, generating mechanical displacement when an electric stimulation is applied. DEAs can be described as compliant capacitors, and when a voltage is applied, a compressive Maxwell stress will ...

Ventricular assist devices (VADs) are vital for patients with severe heart failure but often face limitations in energy efficiency and adaptability. To address these challenges, the dielectric elastomer-based electropneumatic device (DE-EPD) is introduced, ...

This study presents the development and experimental validation of an artificial urinary sphincter (AUS) based on dielectric elastomer actuators (DEAs) for the treatment of urinary incontinence. Traditional AUS devices are often mechanically complex, prone ...

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 ...

Impedance pumps are simple designs that allow the generation or amplification of flow. They are fluid-filled systems based on flexible tubing connected to tubing with different impedances. A periodic off-center compression of the flexible tubing causes the ...

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 ...

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 ...

Although heart transplant is the preferred solution for patients suffering from heart failures, cardiac assist devices remain key substitute therapies. Among them, aortic augmentation using dielectric elastomer actuators (DEAs) might be an alternative tech ...

Armando Matthieu Walter

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Hemodynamic effects of a dielectric elastomer augmented aorta on aortic wave intensity: An in-vivo study

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

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

Characterization of Dielectric Elastomer Actuators: A Design of Experiments Approach

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

Real-time actuation of a dielectric elastomer actuator neuroprosthesis for facial paralysis

Breaking the Cardiovascular Flow Barrier for Dielectric Elastomer Actuator-Based Pumping: Design and Characterization

Carbon based printed electrodes for DEAs: study of pad, inkjet, and stencil printing

An Experimental Approach for the Design of Uni-axial Fiber Reinforced Dielectric Elastomer Actuators

Soft Beats: A Dielectric Elastomer-Based Ventricular Assist Device for Next-Gen Heart Failure Management

Development and validation of a dielectric-elastomer-based artificial urinary sphincter

Influence of Axial Pre-stretch on Tubular Dielectric Elastomer Actuators

Dielectric Elastomer Actuator-Based Valveless Impedance-Driven Pumping for Meso- and Macroscale Applications

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

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

A novel soft cardiac assist device based on a dielectric elastomer augmented aorta: An in vivo study