ArticleLangmuir : the ACS journal of surfaces and colloids2019
ac/dc Magnetic Fields for Enhanced Translation of Colloidal Microwheels.
Article in Langmuir : the ACS journal of surfaces and colloids, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
What it found
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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.
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Who cites it
12 citing papers in PubMed.
- Transport of Adoptive Cell Transfers With Magnetic Helical Microrobots.Small (Weinheim an der Bergstrasse, Germany) · 2025Article
- Surface Rolling Active Magnetic Emulsions.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Magnetically powered microwheel thrombolysis of occlusive thrombi in zebrafish.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Magnetically Powered Microwheel Thrombolysis of Occlusive Thrombi in Zebrafish.bioRxiv : the preprint server for biology · 2023Article
- The mismatch between experimental and computational fluid dynamics analyses for magnetic surface microrollers.Scientific reports · 2023Article
- Paddlebots: Translation of Rotating Colloidal Assemblies near an Air/Water Interface.Langmuir : the ACS journal of surfaces and colloids · 2023Article
- Article
- Review
- Reconfigurable Vortex-like Paramagnetic Nanoparticle Swarm with Upstream Motility and High Body-length Ratio Velocity.Research (Washington, D.C.) · 2023Article
- Reduced rotational flows enable the translation of surface-rolling microrobots in confined spaces.Nature communications · 2022Article
- Multimodal microwheel swarms for targeting in three-dimensional networks.Scientific reports · 2022Article
- An experimental design for the control and assembly of magnetic microwheels.The Review of scientific instruments · 2020Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Microscale devices must overcome fluid reversibility to propel themselves in environments where viscous forces dominate. One approach, used by colloidal microwheels (μwheels) consisting of superparamagnetic particles assembled and powered by rotating ac magnetic fields, is to employ a nearby surface to provide friction. Here, we used total internal reflection microscopy to show that individual 8.3 μm particles roll inefficiently with significant slip because of a particle-surface fluid gap of 20-80 nm. We determined that both gap width and slip increase with the increasing particle rotation rate when the load force is provided by gravity alone, thus providing an upper bound on translational velocity. By imposing an additional load force with a dc magnetic field gradient superimposed on the ac field, we were able to decrease the gap width and thereby enhance translation velocities. For example, an additional load force of 0.2 F
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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.