50 citations · 98 across the 12 of their papers we have counts for
12 papers
Equivalence classes of finite-time transitions in optimal control and non-equilibrium relaxation
Jan Meibohm, Samuel Monter, Clemens Bechinger +1
We present a theory for the optimal control of stochastic systems in structured environments, represented by penalty terms in the cost functional. We show that such control problem…
Memory with Onsager-Casimir symmetry: Rotating particle in a viscoelastic fluid
Debankur Das, Niloyendu Roy, Niklas Windbacher +2
We study the stochastic dynamics of a rotating Brownian particle in a non-Markovian fluid. Experimentally, we find that rotation enhances the long-time diffusivity of the particle…
Bath-modes quantitatively capture the nonlinear microrheology of micellar solutions
Pierre Champagnac, Clemens Bechinger, Juliana Caspers +3
Active microrheology experiments, in which a probe is driven through a complex fluid, often exhibit nonlinear responses that cannot be captured by generalized Langevin equations. M…
Work Extraction via Backward Motion in Optimal Closed-Loop Stochastic Control
Luis Frieder Reinalter, Emanuele Panizon, Lokesh Muruga +1
We experimentally realize finite-time feedback control in an overdamped colloidal system using real-time optical tweezers with in situ reinforcement learning (RL). By varying the p…
Finite-time transitions in optimal control and non-equilibrium relaxation
Jan Meibohm, Samuel Monter, Sarah A. M. Loos +1
We theoretically and experimentally study finite-time optimal control of a colloidal particle steered through a spatially inhomogeneous environment, modeled by a position-dependent…
Energy-Efficient Control of Interacting Microscopic Systems: When Longer Paths Save Energy
Samuel Monter, Lars T. Stutzer, Sarah A. M. Loos +1
We experimentally and theoretically study the thermodynamically optimal control of interacting multiple-particle systems, focusing on collections of colloidal particles individuall…
Extracting work from hidden degrees of freedom
Lokesh Muruga, Felix Ginot, Sarah A. M. Loos +1
Thermodynamics establishes that information acquired through measurement can be converted into work, as exemplified by Maxwell's demon and Szilard engines. Most experimental realiz…
Nonmonotonic Magnetic Friction from Collective Rotor Dynamics
Hongri Gu, Anton Lüders, Clemens Bechinger
Amontons' law postulates a monotonic relationship between frictional force and the normal load applied to a sliding contact. This empirical rule, however, fails in systems where in…
Reservoir computing from collective dynamics of active colloidal oscillators
Veit-Lorenz Heuthe, Lukas Seemann, Samuel Tovey +1
Physical reservoir computing is a computational framework that offers an energy- and computation-efficient alternative to conventional training of neural networks. In reservoir com…
The 2024 Motile Active Matter Roadmap
Gerhard Gompper, Howard A. Stone, Christina Kurzthaler +29
Activity and autonomous motion are fundamental aspects of many living and engineering systems. Here, the scale of biological agents covers a wide range, from nanomotors, cytoskelet…
Counterfactual rewards promote collective transport using individually controlled swarm microrobots
Veit-Lorenz Heuthe, Emanuele Panizon, Hongri Gu +1
Swarm robots offer fascinating opportunities to perform complex tasks beyond the capabilities of individual machines. Just as a swarm of ants collectively moves a large object, sim…
Motility-induced clustering of active particles under soft confinement
Timo Knippenberg, Ashreya Jayaram, Thomas Speck +1
We investigate the structural and dynamic properties of active Brownian particles (APs) confined within a soft annulus-shaped channel. Depending on the strength of the confinement…