Topological active matter

S Shankar, A Souslov, MJ Bowick, MC Marchetti… - Nature Reviews …, 2022 - nature.com
In active matter systems, individual constituents convert energy into non-conservative forces
or motion at the microscale, leading to morphological features and transport properties that …

Machine learning methods for liquid crystal research: phases, textures, defects and physical properties

A Piven, D Darmoroz, E Skorb, T Orlova - Soft Matter, 2024 - pubs.rsc.org
Liquid crystal materials, with their unique properties and diverse applications, have long
captured the attention of researchers and industries alike. From liquid crystal displays and …

Symmetry, thermodynamics, and topology in active matter

MJ Bowick, N Fakhri, MC Marchetti, S Ramaswamy - Physical Review X, 2022 - APS
The name active matter refers to any collection of entities that individually use free energy to
generate their own motion and forces. Through interactions, active particles spontaneously …

Submersed micropatterned structures control active nematic flow, topology, and concentration

K Thijssen, DA Khaladj, SA Aghvami… - Proceedings of the …, 2021 - National Acad Sciences
Coupling between flows and material properties imbues rheological matter with its wide-
ranging applicability, hence the excitement for harnessing the rheology of active fluids for …

Rectified rotational dynamics of mobile inclusions in two-dimensional active nematics

S Ray, J Zhang, Z Dogic - Physical Review Letters, 2023 - APS
We investigate the dynamics of mobile inclusions embedded in 2D active nematics. The
interplay between the inclusion shape, boundary-induced nematic order, and autonomous …

Interpreting neural operators: How nonlinear waves propagate in nonreciprocal solids

J Colen, A Poncet, D Bartolo, V Vitelli - Physical Review Letters, 2024 - APS
We present a data-driven pipeline for model building that combines interpretable machine
learning, hydrodynamic theories, and microscopic models. The goal is to uncover 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 …

Competing instabilities reveal how to rationally design and control active crosslinked gels

B Najma, M Varghese, L Tsidilkovski, L Lemma… - Nature …, 2022 - nature.com
How active stresses generated by molecular motors set the large-scale mechanics of the cell
cytoskeleton remains poorly understood. Here, we combine experiments and theory to …

Variational methods and deep Ritz method for active elastic solids

H Wang, B Zou, J Su, D Wang, X Xu - Soft Matter, 2022 - pubs.rsc.org
Variational methods have been widely used in soft matter physics for both static and
dynamic problems. These methods are mostly based on two variational principles: the …

Geometric confinement guides topological defect pairings and emergent flow in nematic cell populations

R Ienaga, K Beppu, YT Maeda - Soft Matter, 2023 - pubs.rsc.org
Topological defects in nematically aligned cell populations play a critical role in modulating
collective motion, ranging from microbial colonies to epithelial tissues. Despite the potential …