Swimming in complex fluids

SE Spagnolie, PT Underhill - Annual Review of Condensed …, 2023‏ - annualreviews.org
We review the literature on swimming in complex fluids. A classification is proposed by
comparing the length-and timescales of a swimmer with those of nearby obstacles …

Powering motion with enzymes

X Zhao, K Gentile, F Mohajerani… - Accounts of chemical …, 2018‏ - ACS Publications
Conspectus Enzymes are ubiquitous in living systems. Apart from traditional motor proteins,
the function of enzymes was assumed to be confined to the promotion of biochemical …

Correlations from ion pairing and the Nernst-Einstein equation

A France-Lanord, JC Grossman - Physical review letters, 2019‏ - APS
We present a new approximation to ionic conductivity well suited to dynamical atomic-scale
simulations, based on the Nernst-Einstein equation. In our approximation, ionic aggregates …

Chemically propelled molecules and machines

KK Dey, A Sen - Journal of the American Chemical Society, 2017‏ - ACS Publications
Self-propelled, synthetic active matters that transduce chemical energy into mechanical
motion are examples of biomimetic nonequilibrium systems. They are of great current …

Rheology of active fluids

D Saintillan - Annual review of fluid mechanics, 2018‏ - annualreviews.org
An active fluid denotes a viscous suspension of particles, cells, or macromolecules able to
convert chemical energy into mechanical work by generating stresses on the microscale. By …

Imaging the emergence of bacterial turbulence: Phase diagram and transition kinetics

Y Peng, Z Liu, X Cheng - Science advances, 2021‏ - science.org
We experimentally study the emergence of collective bacterial swimming, a phenomenon
often referred to as bacterial turbulence. A phase diagram of the flow of 3D Escherichia coli …

Internal dynamics of semiflexible polymers with active noise

T Eisenstecken, G Gompper, RG Winkler - The Journal of chemical …, 2017‏ - pubs.aip.org
The intramolecular dynamics of flexible and semiflexible polymers in response to active
noise is studied theoretically. The active noise may either originate from interactions of a …

Hydrodynamics-induced long-range attraction between plates in bacterial suspensions

L Ning, X Lou, Q Ma, Y Yang, N Luo, K Chen, F Meng… - Physical Review Letters, 2023‏ - APS
We perform optical-tweezers experiments and mesoscale fluid simulations to study the
effective interactions between two parallel plates immersed in bacterial suspensions. The …

Entrainment dominates the interaction of microalgae with micron-sized objects

R Jeanneret, DO Pushkin, V Kantsler, M Polin - Nature communications, 2016‏ - nature.com
The incessant activity of swimming microorganisms has a direct physical effect on
surrounding microscopic objects, leading to enhanced diffusion far beyond the level of …

Collective entrainment and confinement amplify transport by schooling microswimmers

C **, Y Chen, CC Maass, AJTM Mathijssen - Physical review letters, 2021‏ - APS
Microswimmers can serve as cargo carriers that move deep inside complex flow networks.
When a school collectively entrains the surrounding fluid, their transport capacity can be …