Can magnetic multilayers propel artificial microswimmers mimicking sperm cells?

F Alouges, A DeSimone, L Giraldi, M Zoppello - Soft Robotics, 2015 - liebertpub.com
We formulate and solve the equations governing the dynamics of a microscopic artificial
swimmer composed of a head and of a tail made of a thin film of permanent magnetic …

Bilevel approaches for learning of variational imaging models

L Calatroni, C Chung, JC De Los Reyes… - Variational Methods: In …, 2017 - degruyter.com
We review some recent learning approaches in variational imaging based on bilevel
optimization and emphasize the importance of their treatment in function space. The paper …

Self-propulsion of slender micro-swimmers by curvature control: N-link swimmers

F Alouges, A DeSimone, L Giraldi… - International Journal of …, 2013 - Elsevier
We discuss a reduced model to compute the motion of slender swimmers which propel
themselves by propagating a bending wave along their body. Our approach is based on the …

Controllability and Optimal Control of Microswimmers: Theory and Applications

C Moreau - Journal of the Physical Society of Japan, 2023 - journals.jps.jp
The process of swimming at the microscopic scale is successfully described as a finite-
dimensional, nonholonomic control system due to negligible inertia in the low-Reynolds …

Controllability and optimal strokes for N-link microswimmer

L Giraldi, P Martinon, M Zoppello - 52nd IEEE Conference on …, 2013 - ieeexplore.ieee.org
In this paper we focus on the N-link swimmer [1], a generalization of the classical 3-link
Purcell swimmer [18]. We use the Resistive Force Theory to express the equation of motion …

Local controllability of the two-link magneto-elastic micro-swimmer

L Giraldi, JB Pomet - IEEE Transactions on Automatic Control, 2016 - ieeexplore.ieee.org
A recent promising technique for robotic micro-swimmers is to endow them with a
magnetization and apply an external magnetic field to provoke their deformation. In this …

Optimal strokes for driftless swimmers: A general geometric approach

T Chambrion, L Giraldi, A Munnier - ESAIM: Control, Optimisation …, 2019 - esaim-cocv.org
Swimming consists by definition in propelling through a fluid by means of bodily movements.
Thus, from a mathematical point of view, swimming turns into a control problem for which the …

Purcell magneto-elastic swimmer controlled by an external magnetic field

F Alouges, A Desimone, L Giraldi, M Zoppello - IFAC-PapersOnLine, 2017 - Elsevier
This paper focuses on the mechanism of propulsion of a Purcell swimmer whose segments
are magnetized and react to an external magnetic field applied into the fluid. By an …

The control of particles in the Stokes limit

BJ Walker, K Ishimoto, EA Gaffney… - Journal of Fluid …, 2022 - cambridge.org
There are numerous ways to control objects in the Stokes regime, with microscale examples
ranging from the use of optical tweezers to the application of external magnetic fields. In …

Lagrangian controllability at low Reynolds number

O Glass, T Horsin - ESAIM: Control, Optimisation and Calculus of …, 2016 - esaim-cocv.org
In this paper, we establish a result of Lagrangian controllability for a fluid at low Reynolds
number, driven by the stationary Stokes equation. This amounts to the possibility of …