Publications de Pierre-Etienne Bourban

Helmet material design for mitigating traumatic axonal injuries through AI-driven constitutive law enhancement

Dominique Pioletti, Pierre-Etienne Bourban, Naser Nasrollahzadeh Mamaghani, Vincent Marc Varanges

Sports helmets provide incomplete protection against brain injuries. Here we aim to improve helmet liner efficiency by employing a novel approach that optimizes their properties. By exploiting a finite element model that simulates head impacts, we develope ...

2025

Development and Performance Evaluation of Hybrid Iono-organogels for Efficient Impact Mitigation

Dominique Pioletti, Pierre-Etienne Bourban, Vincent Marc Varanges, Vijay Kumar Rana

Dissipative materials are essential for mitigating impact in various automotive, aerospace, and sports equipment applications. This study investigates the efficiency of a novel hybrid iono-organogel in dissipating and absorbing impact energies. The gel con ...

American Chemical Society (ACS)2024

A Soft Gripper with Granular Jamming and Electroadhesive Properties

Dario Floreano, Pierre-Etienne Bourban, Yegor Piskarev, Jun Shintake, Vivek Ramachandran

In recent years, there has been a growing interest in the development of universal soft grippers that can handle objects of varying form factors (including flat objects), surface conditions (including moistened or oily objects), and mechanical properties ( ...

2023

An Injectable Family Of Soft Tissue Hydrogel Adhesives For Knee Applications

Dominique Pioletti, Pierre-Etienne Bourban, Christophe Moser, Peyman Karami, Céline Samira Wyss

MARY ANN LIEBERT, INC2022

An Intrinsically-Adhesive Family of Injectable and Photo-Curable Hydrogels with Functional Physicochemical Performance for Regenerative Medicine

Dominique Pioletti, Pierre-Etienne Bourban, Christophe Moser, Peyman Karami, Naser Nasrollahzadeh Mamaghani, Céline Samira Wyss

Attaching hydrogels to soft internal tissues is crucial for the development of various biomedical devices. Tough sticky hydrogel patches present high adhesion, yet with lack of injectability and the need for treatment of contacting surface. On the contrary ...

WILEY-V C H VERLAG GMBH2021

Silk granular hydrogels self-reinforced with regenerated silk fibroin fibers

Dominique Pioletti, Pierre-Etienne Bourban, Peyman Karami, Céline Samira Wyss, Adrien Julien Demongeot

Granular hydrogels with high stability, strength, and toughness are laborious to develop. Post-curing is often employed to bind microgels chemically and enhance mechanical properties. Here a unique strategy was investigated to maintain microgels together w ...

2021

Hybrid granular hydrogels: combining composites and microgels for extended ranges of material properties

Dominique Pioletti, Pierre-Etienne Bourban, Peyman Karami, Céline Samira Wyss

Developing hydrogels with optimal properties for specific applications is challenging as most of these properties, such as toughness, stiffness, swelling or deformability, are interrelated. The improvement of one property usually comes at the cost of anoth ...

2020

Cross-linkable polymer, hydrogel, and method of preparation thereof

Dominique Pioletti, Pierre-Etienne Bourban, Christophe Moser, Peyman Karami, Céline Samira Wyss

The invention relates to a cross-linkable polymer comprising a base polymer comprising functional groups at least some of which have been reacted with a first organic molecule comprising a cross-linkable unit and with a second organic molecule capable of b ...

2020

Cyclic loading of a cellulose/hydrogel composite increases its fracture strength

Dominique Pioletti, Céline Samira Wyss, Pierre-Etienne Bourban, Peyman Karami

The fracture properties of hydrogels which present similar characteristics to the Mullins effect is expected to decrease under repeated cyclic loading. Therefore, we assessed how cyclic loading affects the fracture behavior, the distribution of strain fiel ...

2018

Composite Double-Network Hydrogels To Improve Adhesion on Biological Surfaces

Dominique Pioletti, Peyman Karami, Pierre-Etienne Bourban, Christophe Moser, Andreas Schmocker, Azadeh Khoushabi, Céline Samira Wyss, Martin Broome

Despite the development of hydrogels with high mechanical properties, insufficient adhesion between these materials and biological surfaces significantly limits their use in the biomedical field. By controlling toughening processes, we designed a composite ...

2018