Active turbulence

R Alert, J Casademunt, JF Joanny - Annual Review of …, 2022 - annualreviews.org
Active fluids exhibit spontaneous flows with complex spatiotemporal structure, which have
been observed in bacterial suspensions, sperm cells, cytoskeletal suspensions, self …

Micro/nanorobotic swarms: from fundamentals to functionalities

J Law, J Yu, W Tang, Z Gong, X Wang, Y Sun - ACS nano, 2023 - ACS Publications
Swarms, which stem from collective behaviors among individual elements, are commonly
seen in nature. Since two decades ago, scientists have been attempting to understand the …

Probing active nematics with in situ microfabricated elastic inclusions

I Vélez-Cerón, P Guillamat, F Sagués… - Proceedings of the …, 2024 - National Acad Sciences
In this work, we report a direct measurement of the forces exerted by a tubulin/kinesin active
nematic gel as well as its complete rheological characterization, including the quantification …

Logic operations with active topological defects

R Zhang, A Mozaffari, JJ de Pablo - Science advances, 2022 - science.org
Logic operations performed by semiconductor-based transistors are the basis of modern
computing. There is considerable interest in creating autonomous materials systems …

Spontaneous self-constraint in active nematic flows

LC Head, C Doré, RR Keogh, L Bonn, G Negro… - Nature Physics, 2024 - nature.com
Active processes drive biological dynamics across various scales and include subcellular
cytoskeletal remodelling, tissue development in embryogenesis and the population-level …

Polarity and chirality control of an active fluid by passive nematic defects

A Sciortino, LJ Neumann, T Krüger, I Maryshev… - Nature Materials, 2023 - nature.com
Much like passive materials, active systems can be affected by the presence of imperfections
in their microscopic order, called defects, that influence macroscopic properties. This …

Light-activated microtubule-based two-dimensional active nematic

Z Zarei, J Berezney, A Hensley, L Lemma, N Senbil… - Soft matter, 2023 - pubs.rsc.org
We assess the ability of two light responsive kinesin motor clusters to drive dynamics of
microtubule-based active nematics: opto-K401, a processive motor, and opto-K365, a non …

Design rules for controlling active topological defects

S Shankar, LVD Scharrer, MJ Bowick… - Proceedings of the …, 2024 - National Acad Sciences
Topological defects play a central role in the physics of many materials, including magnets,
superconductors, and liquid crystals. In active fluids, defects become autonomous particles …

Active boundary layers in confined active nematics

J Hardoüin, C Doré, J Laurent, T Lopez-Leon… - Nature …, 2022 - nature.com
The role of boundary layers in conventional liquid crystals is commonly related to the
mesogen anchoring on confining walls. In the classical view, anchoring enslaves the …

Data-driven discovery of active nematic hydrodynamics

C Joshi, S Ray, LM Lemma, M Varghese, G Sharp… - Physical review …, 2022 - APS
Active nematics can be modeled using phenomenological continuum theories that account
for the dynamics of the nematic director and fluid velocity through partial differential …