Mechanochemical Active Ratchet
arXiv:2208.13929 · doi:10.1038/s41598-023-47465-2
Abstract
Self-propelled nanoparticles moving through liquids offer the possibility of creating advanced applications where such nanoswimmers can operate as artificial molecular-sized motors. Achieving control over the motion of nanoswimmers is a crucial aspect for their reliable functioning. While the directionality of micron-sized swimmers can be controlled with great precision, steering nano-sized active particles poses a real challenge. One of the reasons is the existence of large fluctuations of active velocity at the nanoscale. Here, we describe a mechanism that, in the presence of a ratchet potential, transforms these fluctuations into a net current of active nanoparticles. We demonstrate the effect using a generic model of self-propulsion powered by chemical reactions. The net motion along the easy direction of the ratchet potential arises from the coupling of chemical and mechanical processes and is triggered by a constant, transverse to the ratchet, force. The current magnitude sensitively depends on the amplitude and the periodicity of the ratchet potential and the strength of the transverse force. Our results highlight the importance of thermodynamically consistent modeling of chemical reactions in active matter at the nanoscale and suggest new ways of controlling dynamics in such systems.
arXiv comment14 pages, 5 figures, to appear in Sci. Rep
References in corpus (35)
- Brownian motors: noisy transport far from equilibrium
- Self-motile colloidal particles: from directed propulsion to random walk
- Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
- Active Brownian Particles. From Individual to Collective Stochastic Dynamics
- Phase transition in the collective migration of tissue cells: experiment and model
- Emergent behavior in active colloids
- Topographical pathways guide chemical microswimmers
- Active Jamming: Self-propelled soft particles at high density
- Phase behaviour of active Brownian particles: The role of dimensionality
- Brownian motion of a self-propelled particle
- Phototaxis of synthetic microswimmers in optical landscapes
- Clusters, asters and collective oscillations in chemotactic colloids
- Dynamics of a Brownian circle swimmer
- Crystallization in a dense suspension of self-propelled particles
- Brownian Particles far from Equilibrium
- Self-propelled particles with fluctuating speed and direction of motion
- Entropy production of active particles and for particles in active baths
- Nanofluidic Rocking Brownian Motors
- Local detailed balance
- Steady State of an Active Brownian Particle in Two-Dimensional Harmonic Trap
- Experimental Control of Transport and Current Reversals in a Deterministic Optical Rocking Ratchet
- Guiding catalytically active particles with chemically patterned surfaces
- Sustained unidirectional rotation of a self-organized DNA rotor on a nanopore
- Omnidirectional Transport in Fully Reconfigurable Two Dimensional Optical Ratchets
- Master curve of boosted diffusion for ten catalytic enzymes
- Active Brownian particles driven by constant affinity
- Transport of active ellipsoidal particles in ratchet potentials
- Experimental observation of current reversal in a rocking Brownian motor
- Active Brownian particle in harmonic trap: exact computation of moments, and re-entrant transition
- Active colloidal propulsion over a crystalline surface
- Enhancing nanoparticle diffusion on a unidirectional domain wall magnetic ratchet
- Transport coefficients for a confined Brownian ratchet operating between two heat reservoirs
- Transport and Diffusion Enhancement in Experimentally Realized Non-Gaussian Correlated Ratchets
- Enhanced diffusivity in microscopically reversible active matter
- Diffusion coefficient and power spectrum of active particles with a microscopically reversible mechanism of self-propelling