ArticleProceedings of the National Academy of Sciences of the United States of America2017
Hydrodynamic and entropic effects on colloidal diffusion in corrugated channels.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed.
- Enhanced Taylor-Aris dispersion in slender pulsatile annular channels: Implications for perivascular solute transport.Journal of fluid mechanics · 2026Article
- Article
- Electrokinetic nanoparticle transport in an interconnected porous environment: Decoupling cavity escape and directional bias.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Controlling transient and coupled diffusion with pseudoconformal mapping.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Drift Versus Entropic Forces in Overdamped Diffusion Through a Widening Channel.Molecules (Basel, Switzerland) · 2025Article
- Experimentally Probing the Effect of Confinement Geometry on Lipid Diffusion.The journal of physical chemistry. B · 2024Article
- Nano-particle motion in a monolithic silica column using the single-particle tracking method.Nanoscale advances · 2024Article
- Nanomotor-enhanced transport of passive Brownian particles in porous media.Science advances · 2023Article
- Colloidal transport phenomena in dynamic, pulsating porous materials.AIChE journal. American Institute of Chemical Engineers · 2023Article
- Closed Formula for Transport across Constrictions.Entropy (Basel, Switzerland) · 2023Article
- Narrow Pore Crossing of Active Particles under Stochastic Resetting.Entropy (Basel, Switzerland) · 2023Article
- Diffusion Coefficient of a Brownian Particle in Equilibrium and Nonequilibrium: Einstein Model and Beyond.Entropy (Basel, Switzerland) · 2022Review
- Dispersive transport dynamics in porous media emerge from local correlations.Nature communications · 2022Article
- Fluidic bacterial diodes rectify magnetotactic cell motility in porous environments.Nature communications · 2021Article
- Channel-length dependence of particle diffusivity in confinement.Soft matter · 2021Article
- Diffusion of Protein Molecules through Microporous Nanofibrous Polyacrylonitrile Membranes.ACS applied polymer materials · 2021Article
- Direct detection of molecular intermediates from first-passage times.Science advances · 2020Article
- Optimizing Brownian escape rates by potential shaping.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- In silico construction of a flexibility-based DNA Brownian ratchet for directional nanoparticle delivery.Science advances · 2019Article
- Experimental evidence of symmetry breaking of transition-path times.Nature communications · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In the absence of advection, confined diffusion characterizes transport in many natural and artificial devices, such as ionic channels, zeolites, and nanopores. While extensive theoretical and numerical studies on this subject have produced many important predictions, experimental verifications of the predictions are rare. Here, we experimentally measure colloidal diffusion times in microchannels with periodically varying width and contrast results with predictions from the Fick-Jacobs theory and Brownian dynamics simulation. While the theory and simulation correctly predict the entropic effect of the varying channel width, they fail to account for hydrodynamic effects, which include both an overall decrease and a spatial variation of diffusivity in channels. Neglecting such hydrodynamic effects, the theory and simulation underestimate the mean and standard deviation of first passage times by 40% in channels with a neck width twice the particle diameter. We further show that the validity of the Fick-Jacobs theory can be restored by reformulating it in terms of the experimentally measured diffusivity. Our work thus shows that hydrodynamic effects play a key role in diffusive transport through narrow channels and should be included in theoretical and numerical models.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.