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Programmable self-propelling actuators enabled by a dynamic helical medium
- Source :
- Science Advances
- Publication Year :
- 2021
- Publisher :
- American Association for the Advancement of Science, 2021.
-
Abstract
- Actuators mimic the unique motion of bacteria, which are realized by self-organizing photoresponsive cholesteric liquid crystals.<br />Rotation-translation conversion is a popular way to achieve power transmission in machinery, but it is rarely selected by nature. One unique case is that of bacteria swimming, which is based on the collective reorganization and rotation of flagella. Here, we mimic such motion using the light-driven evolution of a self-organized periodic arch pattern. The range and direction of translation are altered by separately varying the alignment period and the stimulating photon energy. Programmable self-propelling actuators are realized via a specific molecular assembly within a photoresponsive cholesteric medium. Through rationally presetting alignments, parallel transports of microspheres in customized trajectories are demonstrated, including convergence, divergence, gathering, and orbital revolution. This work extends the understanding of the rotation-translation conversion performed in an exquisitely self-organized system and may inspire future designs for functional materials and intelligent robotics.
- Subjects :
- Power transmission
Multidisciplinary
business.industry
Computer science
Work (physics)
Materials Science
SciAdv r-articles
Control engineering
Robotics
Rotation
Translation (geometry)
Computer Science::Robotics
Condensed Matter::Soft Condensed Matter
Convergence (routing)
Artificial intelligence
business
Actuator
Divergence (statistics)
Research Articles
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 23752548
- Volume :
- 7
- Issue :
- 32
- Database :
- OpenAIRE
- Journal :
- Science Advances
- Accession number :
- edsair.doi.dedup.....ada0d0503c3b069a095461d998d1964f