Small-scale soft-bodied robot with multimodal locomotion
Top Cited Papers
- 24 January 2018
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature
- Vol. 554 (7690), 81-85
- https://doi.org/10.1038/nature25443
Abstract
Untethered small-scale (from several millimetres down to a few micrometres in all dimensions) robots that can non-invasively access confined, enclosed spaces may enable applications in microfactories such as the construction of tissue scaffolds by robotic assembly1, in bioengineering such as single-cell manipulation and biosensing2, and in healthcare3,4,5,6 such as targeted drug delivery4 and minimally invasive surgery3,5. Existing small-scale robots, however, have very limited mobility because they are unable to negotiate obstacles and changes in texture or material in unstructured environments7,8,9,10,11,12,13. Of these small-scale robots, soft robots have greater potential to realize high mobility via multimodal locomotion, because such machines have higher degrees of freedom than their rigid counterparts14,15,16. Here we demonstrate magneto-elastic soft millimetre-scale robots that can swim inside and on the surface of liquids, climb liquid menisci, roll and walk on solid surfaces, jump over obstacles, and crawl within narrow tunnels. These robots can transit reversibly between different liquid and solid terrains, as well as switch between locomotive modes. They can additionally execute pick-and-place and cargo-release tasks. We also present theoretical models to explain how the robots move. Like the large-scale robots that can be used to study locomotion17, these soft small-scale robots could be used to study soft-bodied locomotion produced by small organisms.This publication has 28 references indexed in Scilit:
- Mobile microrobots for bioengineering applicationsLab on a Chip, 2017
- Soft micromachines with programmable motility and morphologyNature Communications, 2016
- Jumping on water: Surface tension–dominated jumping of water striders and robotic insectsScience, 2015
- Biomedical Applications of Untethered Mobile Milli/MicrorobotsProceedings of the IEEE, 2015
- Three-dimensional heterogeneous assembly of coded microgels using an untethered mobile microgripperLab on a Chip, 2015
- Continuously distributed magnetization profile for millimeter-scale elastomeric undulatory swimmingApplied Physics Letters, 2014
- Shape memory alloy-based small crawling robots inspired by C. elegansBioinspiration & Biomimetics, 2011
- Microrobots for Minimally Invasive MedicineAnnual Review of Biomedical Engineering, 2010
- Voyage of the microrobotsNature, 2009
- Self‐Walking GelAdvanced Materials, 2007