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Stéphanie Lacour

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Publications associées (122)

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Soft, Implantable Bioelectronic Interfaces for Translational Research

Sébastien Jiguet, Giuseppe Schiavone, Nicolas Vachicouras, Florian Dylan Fallegger, Stéphanie Lacour, Grégoire Courtine, Marco Capogrosso, Evgenia Vladimirova Roussinova, Ivan Furfaro, Andreas Rowald, Simon Borgognon, Jocelyne Bloch, Xiaoyang Kang, Ismael Seanez Gonzalez

The convergence of materials science, electronics, and biology, namely bioelectronic interfaces, leads novel and precise communication with biological tissue, particularly with the nervous system. However, the translation of lab‐based innovation toward cli ...

Wiley2020

Nanoscale Controlled Oxidation of Liquid Metals for Stretchable Electronics and Photonics

Stéphanie Lacour, Fabien Sorin, Wei Yan, Louis Marie Philippe Martin-Monier

Liquid metals based on gallium have attracted considerable attention for soft and bioelectronics, thanks to their excellent combination of stretchability and conductivity. Nevertheless, owing to their large surface tension, these materials are notoriously ...

2020

Soft And Wearable Transducers: Opportunities And Challenges For Daily Use

Stéphanie Lacour

Soft bioelectronic interfaces are broadly defined as microfabricated devices, distributed over large-areas, and with mechanical properties suited to comply the soft and dynamic biological tissues. The hybrid integration and processing of materials ranging ...

IEEE2019

A Method to Form Smooth Films of Liquid Metal Supported by Elastomeric Substrate

Stéphanie Lacour, Arthur Edouard Hirsch

Several methods are proposed to manipulate and pattern liquid metal films into elastic conductors but all lack precise control over the film thickness and roughness, thereby limiting its uniformity, stability, and reproducibility. Here, an approach relying ...

2018

Subdural Soft Electrocorticography (ECoG) Array Implantation and Long-Term Cortical Recording in Minipigs

Florian Dylan Fallegger, Stéphanie Lacour, Alix Esther Anne Trouillet

Neurological impairments and diseases can be diagnosed or treated using electrocorticography (ECoG) arrays. In drug-resistant epilepsy, these help delineate the epileptic region to resect. In long-term applications such as brain-computer interfaces, these ...

JOURNAL OF VISUALIZED EXPERIMENTS2023

A finite element model of the mechanical interactions between peripheral nerves and intrafascicular implants

Stéphanie Lacour, Silvestro Micera, Outman Akouissi

Objective. Intrafascicular peripheral nerve implants are key components in the development of bidirectional neuroprostheses such as touch-enabled bionic limbs for amputees. However, the durability of such interfaces is hindered by the immune response follo ...

IOP Publishing Ltd2022

Active force generation contributes to the complexity of spontaneous activity and to the response to stretch of murine cardiomyocyte cultures

Stéphanie Lacour

Cardiomyocyte cultures exhibit spontaneous electrical and contractile activity, as in a natural cardiac pacemaker. In such preparations, beat rate variability exhibits features similar to those of heart rate variability in vivo. Mechanical deformations and ...

WILEY2022

Viscoelastic surface electrode arrays to interface with viscoelastic tissues

Nicolas Vachicouras, Florian Dylan Fallegger, Stéphanie Lacour, Christina Myra Tringides, Alix Esther Anne Trouillet

Bioelectronic interfacing with living tissues should match the biomechanical properties of biological materials to reduce damage to the tissues. Here, the authors present a fully viscoelastic microelectrode array composed of an alginate matrix and carbon-b ...

Nature Research2021

Recent Advances in Encapsulation of Flexible Bioelectronic Implants: Materials, Technologies, and Characterization Methods

Yves Leterrier, Stéphanie Lacour, Kyungjin Kim, Kangling Wu, Massimo Mariello

Bioelectronic implantable systems (BIS) targeting biomedical and clinical research should combine long-term performance and biointegration in vivo. Here, recent advances in novel encapsulations to protect flexible versions of such systems from the surround ...

Wiley-V C H Verlag Gmbh2022

Controlled Sub-Micrometer Hierarchical Textures Engineered in Polymeric Fibers and Microchannels via Thermal Drawing

Stéphanie Lacour, Dang Tùng Nguyen, Fabien Sorin, Alexis Gérald Page, Wei Yan, Yunpeng Qu, Marco Volpi

The controlled texturing of surfaces at the micro- and nanoscales is a powerful method for tailoring how materials interact with liquids, electromagnetic waves, or biological tissues. The increasing scientific and technological interest in advanced fibers ...

2017

Gallium‐Based Thin Films for Wearable Human Motion Sensors

Laurent Mirko Dejace, Stéphanie Lacour, Ivan Furfaro

Wearable electronic circuits based on the films of gallium and its alloys offer promising implementations in health monitoring and gaming sensing applications. However, the complex rheology of liquid metals makes it challenging to manufacture thin gallium‐ ...

2019

A 16-Channel Wireless Neural Recording System-on-Chip with CHT Feature Extraction Processor in 65nm CMOS

Catherine Dehollain, Yusuf Leblebici, Volkan Cevher, Florian Dylan Fallegger, Stéphanie Lacour, Cosimo Aprile, Kerim Türe, Arda Uran, Alix Esther Anne Trouillet

Wireless implantable neural recording chips enable multichannel data acquisition with high spatiotemporal resolution in situ. Recently, the use of machine learning approaches on neural data for diagnosis and prosthesis control have renewed the interest in ...

2021

Patterned biphasic electrical conductor and methods for producing thereof

Stéphanie Lacour, Arthur Edouard Hirsch

A method for manufacturing an electrical conductor is herein disclosed, said method comprising a) providing a substrate comprising on a surface thereof a solid metal conductive layer or film; b) depositing a liquid metal on said solid layer; c) allowing sa ...

2019

Extended Barrier Lifetime of Partially Cracked Organic/Inorganic Multilayers for Compliant Implantable Electronics

Yves Leterrier, Julien Emile Carron, Giuseppe Schiavone, Stéphanie Lacour, Kyungjin Kim, Kangling Wu

Flexible and soft bioelectronics display conflicting demands on miniaturization, compliance, and reliability. Here, the authors investigate the design and performance of thin encapsulation multilayers against hermeticity and mechanical integrity. Partially ...

WILEY-V C H VERLAG GMBH2021

Method for manufacturing electrical conductors, and electrical conductors manufactured according to same

Stéphanie Lacour, Hadrien Olivier Michaud, Arthur Edouard Hirsch, Ivan Rusev Minev

A method for manufacturing an electrical conductor 43 and an electrical conductor 43 manufactured according to the method, said method comprising: providing a substrate 30; depositing a solid metal conductive layer or film 40 on said substrate 30; Depositi ...

2017

Soft metal constructs for large strain sensor membrane

Joan Teixidor, Stéphanie Lacour, Hadrien Olivier Michaud

Thin gold films on silicone display large reversible change in electrical resistance upon stretching. Eutectic liquid metal conductors maintain bulk metal conductivity, even upon extensive elongation. When integrated together, the soft metals enable multid ...

Iop Publishing Ltd2015

Epineural optogenetic activation of nociceptors initiates and amplifies inflammation

Frédéric Pierre Gérald Michoud, Stéphanie Lacour, Katia Galan, Ivan Furfaro, Outman Akouissi

Activation of nociceptor sensory neurons by noxious stimuli both triggers pain and increases capillary permeability and blood flow to produce neurogenic inflammation(1,2), but whether nociceptors also interact with the immune system remains poorly understo ...

NATURE RESEARCH2020

Bi-Modal Control of Vacuum-Powered Soft Pneumatic Actuators with Embedded Liquid Metal-Based Strain Sensitive Skin

Laurent Mirko Dejace, Stéphanie Lacour, Jamie Paik, Matthew Aaron Robertson

Soft robotic systems are composed of active and passively deformable structures which are intrinsically compliant, flexible, and elastic. Although these features offer benefits of adaptability, robustness, and safety, controlling these types of robots is a ...

IEEE2019

Development and Evaluation of a Sensor Glove to Detect Grasp Intention for a Wearable Robotic Hand Exoskeleton

Stéphanie Lacour, Haotian Chen

Restoring hand function in people suffering from neuromotor hand impairment is a crucial step towards regaining independence. Wearable robotic hand orthoses are a promising approach to support that aim by providing grasp assistance in daily life. For succe ...

IEEE2020

Hybrid stretchable circuits on silicone substrate

Stéphanie Lacour

When rigid and stretchable components are integrated onto a single elastic carrier substrate, large strain heterogeneities appear in the vicinity of the deformable-non-deformable interfaces. In this paper, we report on a generic approach to manufacture hyb ...

American Institute of Physics2014