Matthieu Labousse
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View article: Droplet-on-demand using a positive pressure pulse
Droplet-on-demand using a positive pressure pulse Open
Droplet generation under steady conditions is a common microfluidic method for producing biphasic systems. However, this process works only over a limited range of imposed pressure: beyond a critical value, a stable liquid jet can instead …
View article: Dynamic heterogeneity of short semi-crystalline polymer chains during recrystallization
Dynamic heterogeneity of short semi-crystalline polymer chains during recrystallization Open
The instant crystallization of semi-crystalline polymers has become possible following the recent advances in Fast Scanning Calorimetry (FSC) and enables us to make a bridge between the time scale available experimentally with those access…
View article: Path-dependency and emergent computing under vectorial driving
Path-dependency and emergent computing under vectorial driving Open
The sequential response of frustrated materials - ranging from crumpled sheets and amorphous media to metamaterials - reveals their memory effects and emergent computational potential. Despite their spatial extension, most studies rely on …
View article: Swelling and Evaporation Determine Surface Morphology of Grafted Hydrogel Thin Films
Swelling and Evaporation Determine Surface Morphology of Grafted Hydrogel Thin Films Open
We experimentally study the formation of surface patterns in grafted hydrogel films of nanometer-to-micrometer thicknesses during imbibition-driven swelling followed by evaporation-driven shrinking. Creases are known to form at the hydroge…
View article: Dynamic Heterogeneity of Short Semi-crystalline Polymer Chains during Recrystallization
Dynamic Heterogeneity of Short Semi-crystalline Polymer Chains during Recrystallization Open
The instant crystallization of semi-crystalline polymers have become possible following the recent advances in Fast Scanning Calorimetry (FSC) and enables to make a bridge between the time scale available experimentally with those accessib…
View article: Static Bell test in pilot-wave hydrodynamics
Static Bell test in pilot-wave hydrodynamics Open
The experimental violation of Bell's Theorem in quantum systems is generally taken as proof of the impossibility of local hidden variable theories, as would provide a rational dynamical underpinning for quantum mechanics. We here present a…
View article: Polymer time crystal: Mechanical activation of reversible bonds by low-amplitude high frequency excitations
Polymer time crystal: Mechanical activation of reversible bonds by low-amplitude high frequency excitations Open
Reversible supramolecular bonds play an important role in materials science and in biological systems. The equilibrium between open and closed bonds and the association rate can be controlled thermally, chemically, by mechanical pulling, b…
View article: Frugal random exploration strategy for shape recognition using statistical geometry
Frugal random exploration strategy for shape recognition using statistical geometry Open
Very distinct strategies can be deployed to recognize and characterize an unknown environment or a shape. A recent and promising approach, especially in robotics, is to reduce the complexity of the exploratory units to a minimum. Here, we …
View article: Frugal random exploration strategy for shape recognition using statistical geometry
Frugal random exploration strategy for shape recognition using statistical geometry Open
Very distinct strategies can be deployed to recognize and characterize an unknown environment or a shape. A recent and promising approach, especially in robotics, is to reduce the complexity of the exploratory units to a minimum. Here, we …
View article: Mechanical activation of reversible bonds by low amplitude high frequencies excitations
Mechanical activation of reversible bonds by low amplitude high frequencies excitations Open
Reversible covalent or supramolecular bonds play an important role in materials science and in biological systems. The equilibrium between open and closed bonds and the association rate can be controlled thermally, chemically, by mechanica…
View article: Damping-Driven Time Reversal for Waves
Damping-Driven Time Reversal for Waves Open
Damping is usually associated with irreversibility. Here, we present a counterintuitive concept to achieve time reversal of waves propagating in a lossless medium using a transitory dissipation pulse. Applying a sudden and strong damping i…
View article: A platform for investigating Bell correlations in pilot-wave hydrodynamics
A platform for investigating Bell correlations in pilot-wave hydrodynamics Open
Since its discovery in 2005, the hydrodynamic pilot-wave system has provided a concrete macroscopic realization of wave-particle duality and concomitant classical analogs of a growing list of quantum effects. The question naturally arises …
View article: Hydrodynamic superradiance in wave-mediated cooperative tunneling
Hydrodynamic superradiance in wave-mediated cooperative tunneling Open
Superradiance occurs in quantum optics when the emission rate of photons from multiple atoms is enhanced by inter-atom interactions. When the distance between two atoms is comparable to the emission wavelength, the atoms become entangled a…
View article: Statistical self-organization of a gas of interacting walking drops in a confining potential
Statistical self-organization of a gas of interacting walking drops in a confining potential Open
A drop bouncing on a vertically-vibrated surface may self-propel forward by standing waves and travels along a fluid interface. This system called walking drop forms a non-quantum wave-particle association at the macroscopic scale. The dyn…
View article: Mean arc theorem for exploring domains with randomly distributed arbitrary closed trajectories
Mean arc theorem for exploring domains with randomly distributed arbitrary closed trajectories Open
A remarkable result from integral geometry is Cauchy's formula, which relates the mean path length of ballistic trajectories randomly crossing a convex 2D domain, to the ratio between the region area and its perimeter. This theorem has bee…
View article: Overload wave-memory induces amnesia of a self-propelled particle
Overload wave-memory induces amnesia of a self-propelled particle Open
Information storage is a key element of autonomous, out-of-equilibrium dynamics, especially for biological and synthetic active matter. In synthetic active matter however, the implementation of internal memory in self-propelled systems is …
View article: Micrometric Monodisperse Solid Foams as Complete Photonic Bandgap Materials
Micrometric Monodisperse Solid Foams as Complete Photonic Bandgap Materials Open
Solid foams with micrometric pores are used in different fields (filtering, 3D cell culture, etc.), but today, controlling their foam geometry at the pore level, their internal structure, and the monodispersity, along with their mechanical…
View article: Ordering of Functional Groups by Confining Grafted Chains, Star Polymers, or Polymer-Stabilized Nanoparticles
Ordering of Functional Groups by Confining Grafted Chains, Star Polymers, or Polymer-Stabilized Nanoparticles Open
International audience
View article: Complete photonic band gaps in 3D foams
Complete photonic band gaps in 3D foams Open
To-date, despite remarkable applications in optoelectronics and tremendous amount of theoretical, computational and experimental efforts, there is no technological pathway enabling the fabrication of 3D photonic band gaps in the visible ra…
View article: Tunable bimodal explorations of space from memory-driven deterministic dynamics
Tunable bimodal explorations of space from memory-driven deterministic dynamics Open
We present a wave-memory-driven system that exhibits intermittent switching between two propulsion modes in free space. The model is based on a pointlike particle emitting periodically cylindrical standing waves. Submitted to a force relat…
View article: Multistable Free States of an Active Particle from a Coherent Memory Dynamics
Multistable Free States of an Active Particle from a Coherent Memory Dynamics Open
We investigate the dynamics of a deterministic self-propelled particle endowed with coherent memory. We evidence experimentally and numerically that it exhibits several stable free states. The system is composed of a self-propelled drop bo…
View article: Transition to chaos in wave memory dynamics in a harmonic well : deterministic and noise-driven behaviour
Transition to chaos in wave memory dynamics in a harmonic well : deterministic and noise-driven behaviour Open
A walker is the association of a sub-millimetric bouncing drop moving along with a co-evolving Faraday wave. When confined in a harmonic potential, its stable trajectories are periodic and quantised both in extension and mean angular momen…
View article: Memory-driven run and tumble deterministic dynamics
Memory-driven run and tumble deterministic dynamics Open
We present a wave-memory driven system that exhibits a macroscopic diffusive-like behavior emerging from a deterministic set of microscopic rules. This diffusive-like motion originates from a self-scattering process that the wave-particle …
View article: <strong>HIGH FREQUENCY NANO-OPTOMECHANICAL DISK RESONATORS OPERATING IN LIQUIDS FOR SENSING APPLICATIONS</strong>
<strong>HIGH FREQUENCY NANO-OPTOMECHANICAL DISK RESONATORS OPERATING IN LIQUIDS FOR SENSING APPLICATIONS</strong> Open
Optomechanical resonators have been the subject of extensive research in a variety of fields, such as advanced sensing, communication and novel quantum technologies. We present our work towards the development of nano-optomechanical semico…
View article: Self-propulsion and crossing statistics under random initial conditions
Self-propulsion and crossing statistics under random initial conditions Open
We investigate the crossing of an energy barrier by a self-propelled particle described by a Rayleigh friction term. We reveal the existence of a sharp transition in the external force field whereby the amplitude dramatically increases. Th…