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Patterned Aluminum/Polydimethylsiloxane-Laminated Film for a Solvent-Driven Soft Actuator with Programmable and
Qiaohang Guo1, Jiuwei Yan1, Changsheng Wu1
1School of Materials Science and Engineering, Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, Fujian University of Technology, Fuzhou350118, China.
ACS Applied Materials & Interfaces
|October 24, 2022
Summary
Researchers developed novel solvent-driven soft actuators using patterned aluminum/polydimethylsiloxane (Al/PDMS) films. These actuators exhibit multiple stable configurations, offering new possibilities for reconfigurable soft robots and smart materials.
Area of Science:
- Materials Science
- Robotics
- Soft Matter Physics
Background:
- Soft actuators are crucial for emerging industries but untethered, multistable actuators are underdeveloped.
- Mechanically guiding design principles for multistable structures are lacking.
Purpose of the Study:
- To develop novel solvent-driven soft actuators with multistable deformations.
- To establish design principles for multistable soft actuator structures.
- To demonstrate the potential of these actuators in bionic applications.
Main Methods:
- Fabrication of patterned Al/PDMS-laminated films with surface wrinkles via magnetron sputtering.
- Tuning geometric parameters and surface constraints to achieve various stable configurations.
- Utilizing linear elastic theory and finite element analysis for deformation prediction.
- Modulating deformation in Z-shaped actuators by regional surface constraint tuning.
Main Results:
- A series of solvent-driven actuators with monostable arc, multistable cylinder, and monostable/bistable spiral configurations were successfully fabricated.
- Deformation mechanisms were elucidated using theoretical and computational methods.
- Achieved multiple stable deformations within a single Z-shaped actuator by precise surface constraint control.
- Demonstrated bionic applications in artificial muscles and robotics.
Conclusions:
- The patterned Al/PDMS films provide a versatile platform for designing programmable and controllable soft actuators.
- This work lays the foundation for advanced reconfigurable soft robots and smart material applications.
- The developed design strategy enables precise control over actuator shape and function.
