Multi-stimuli-responsive programmable biomimetic actuator

Yue Dong, Jie Wang, Xukui Guo, Shanshan Yang, Mehmet Ozgun Ozen, Peng Chen, Xin Liu, Wei Du, Fei Xiao, Utkan Demirci () and Bi-Feng Liu ()
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Yue Dong: Huazhong University of Science and Technology
Jie Wang: Huazhong University of Science and Technology
Xukui Guo: Huazhong University of Science and Technology
Shanshan Yang: Huazhong University of Science and Technology
Mehmet Ozgun Ozen: Bio-Acoustic MEMS in Medicine (BAMM) Laboratory, Canary Center at Stanford for Cancer Early Detection, Department of Radiology School of Medicine Stanford University
Peng Chen: Huazhong University of Science and Technology
Xin Liu: Huazhong University of Science and Technology
Wei Du: Huazhong University of Science and Technology
Fei Xiao: Huazhong University of Science and Technology
Utkan Demirci: Bio-Acoustic MEMS in Medicine (BAMM) Laboratory, Canary Center at Stanford for Cancer Early Detection, Department of Radiology School of Medicine Stanford University
Bi-Feng Liu: Huazhong University of Science and Technology

Nature Communications, 2019, vol. 10, issue 1, 1-10

Abstract: Abstract Untethered small actuators have various applications in multiple fields. However, existing small-scale actuators are very limited in their intractability with their surroundings, respond to only a single type of stimulus and are unable to achieve programmable structural changes under different stimuli. Here, we present a multiresponsive patternable actuator that can respond to humidity, temperature and light, via programmable structural changes. This capability is uniquely achieved by a fast and facile method that was used to fabricate a smart actuator with precise patterning on a graphene oxide film by hydrogel microstamping. The programmable actuator can mimic the claw of a hawk to grab a block, crawl like an inchworm, and twine around and grab the rachis of a flower based on their geometry. Similar to the large- and small-scale robots that are used to study locomotion mechanics, these small-scale actuators can be employed to study movement and biological and living organisms.

Date: 2019
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DOI: 10.1038/s41467-019-12044-5

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