Microscopic robots with onboard digital control

MF Reynolds, AJ Cortese, Q Liu, Z Zheng, W Wang… - Science Robotics, 2022 - science.org
Autonomous robots—systems where mechanical actuators are guided through a series of
states by information processing units to perform a predesigned function—are expected to …

Hydrodynamics can determine the optimal route for microswimmer navigation

A Daddi-Moussa-Ider, H Löwen, B Liebchen - Communications Physics, 2021 - nature.com
As compared to the well explored problem of how to steer a macroscopic agent, like an
airplane or a moon lander, to optimally reach a target, optimal navigation strategies for …

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 …

Theoretical perspectives on natural and artificial micro-swimmers

J Liu, Y Fu, X Liu, H Ruan - Acta Mechanica Solida Sinica, 2021 - Springer
The observations of microorganisms revealed how they swim. As inspired by them, studies
on artificial micro-robots with various actuation mechanisms have been thriving. To elucidate …

The asymptotic coarse-graining formulation of slender-rods, bio-filaments and flagella

C Moreau, L Giraldi, H Gadêlha - Journal of the Royal …, 2018 - royalsocietypublishing.org
The inertialess fluid–structure interactions of active and passive inextensible filaments and
slender-rods are ubiquitous in nature, from the dynamics of semi-flexible polymers and …

[HTML][HTML] Mechanical rotation at low Reynolds number via reinforcement learning

Y Liu, Z Zou, ACH Tsang, OS Pak, YN Young - Physics of Fluids, 2021 - pubs.aip.org
There is growing interest in the development of artificial microscopic machines that can
perform complex maneuvers like swimming microorganisms for potential biomedical …

[HTML][HTML] Morphable structures from unicellular organisms with active, shape-shifting envelopes: Variations on a theme by Gauss

G Cicconofri, M Arroyo, G Noselli… - International Journal of …, 2020 - Elsevier
We discuss some recent results on biological and bio-inspired morphing, and use them to
identify promising research directions for the future. In particular, we consider issues related …

Steering undulatory micro-swimmers in a fluid flow through reinforcement learning

Z El Khiyati, R Chesneaux, L Giraldi, J Bec - The European Physical …, 2023 - Springer
This work aims at finding optimal navigation policies for thin, deformable microswimmers
that progress in a viscous fluid by propagating a sinusoidal undulation along their slender …

Peristaltic waves as optimal gaits in metameric bio-inspired robots

D Agostinelli, F Alouges, A DeSimone - Frontiers in Robotics and AI, 2018 - frontiersin.org
Peristalsis, ie, a motion pattern arising from the propagation of muscle contraction and
expansion waves along the body, is a common locomotion strategy for limbless animals …

Local drag of a slender rod parallel to a plane wall in a viscous fluid

L Koens, TD Montenegro-Johnson - Physical Review Fluids, 2021 - APS
The viscous drag on a slender rod by a wall is important to many biological and industrial
systems. This drag critically depends on the separation between the rod and the wall and …