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Date
2019-11Type
- Journal Article
Citations
Cited 77 times in
Web of Science
Cited 73 times in
Scopus
ETH Bibliography
yes
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Abstract
Field-directed and self-propelled colloidal assembly have been used to build micromachines capable of performing complex motions and functions. However, integrating heterogeneous components into micromachines with specified structure, dynamics and function is still challenging. Here, we describe the dynamic self-assembly of mobile micromachines with desired configurations through pre-programmed physical interactions between structural and motor units. The assembly is driven by dielectrophoretic interactions, encoded in the three-dimensional shape of the individual parts. Micromachines assembled from magnetic and self-propelled motor parts exhibit reconfigurable locomotion modes and additional rotational degrees of freedom that are not available to conventional monolithic microrobots. The versatility of this site-selective assembly strategy is demonstrated on different reconfigurable, hierarchical and three-dimensional micromachine assemblies. Our results demonstrate how shape-encoded assembly pathways enable programmable, reconfigurable mobile micromachines. We anticipate that the presented design principle will advance and inspire the development of more sophisticated, modular micromachines and their integration into multiscale hierarchical systems. Show more
Publication status
publishedExternal links
Journal / series
Nature MaterialsVolume
Pages / Article No.
Publisher
Nature Publishing GroupSubject
Applied physics; Colloids; Engineering; Self-assemblyOrganisational unit
09726 - Sitti, Metin / Sitti, Metin
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Show all metadata
Citations
Cited 77 times in
Web of Science
Cited 73 times in
Scopus
ETH Bibliography
yes
Altmetrics