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- Marr, David W. M., et al. Show all 3 Authors
- Langmuir 2019 v.35 no.9 pp. 3455-3460
- friction; gravity; magnetic fields; microscopy
- ... 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 ...
- Marr, David W. M., et al. Show all 5 Authors
- Langmuir 2017 v.33 no.23 pp. 5932-5937
- chemistry; fluid mechanics; magnetic fields
- ... Microbot propulsion has seen increasing interest in recent years as artificial methods that overcome the well-established reversible and challenging nature of microscale fluid mechanics. While controlled movement is an important feature of microbot action, many envisioned applications also involve cargo transport where microbots must be able to load and unload contents on command while tolerating ...