Journal
SCIENCE ADVANCES
Volume 7, Issue 32, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abh3505
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Funding
- National Key Research and Development Program of China [2017YFA0303700]
- National Natural Science Foundation of China (NSFC) [62035008, 61922038, 52003115, 12004175]
- Natural Science Foundation of Jiangsu Province [BK20200320, BK20200311]
- Fundamental Research Funds for the Central Universities [021314380189]
- Innovation and Entrepreneurship Program of Jiangsu Province
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This study successfully mimics the rotation-translation conversion in bacteria swimming through the light-driven evolution of a self-organized periodic arch pattern. By separately varying the alignment period and the stimulating photon energy, the range and direction of translation are altered. Programmable self-propelling actuators are realized, demonstrating parallel transports of microspheres in customized trajectories.
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.
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