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Scale-reconfigurable miniature ferrofluidic robots for negotiating sharply variable spaces.
Xinjian Fan1, Yihui Jiang1, Mingtong Li2
1School of Mechanical and Electrical Engineering, Soochow University, No. 8, Jixue Road, Suzhou 215131, China.
Science Advances
|September 16, 2022
Summary
Researchers developed scale-reconfigurable miniature ferrofluidic robots (SMFRs) that can change size for navigating confined spaces. These adaptable robots offer new possibilities for minimally invasive medical procedures within the human body.
Area of Science:
- Biomedical Engineering
- Robotics
- Materials Science
Background:
- Miniature soft robots offer minimally invasive biomedical solutions.
- Current fixed-size robots face limitations in navigating varying confined spaces.
Purpose of the Study:
- To develop scale-reconfigurable miniature ferrofluidic robots (SMFRs).
- To enable trans-scale motion control through size and shape reconfiguration.
- To introduce a multiscale magnetic miniature robot actuation (M³RA) system.
Main Methods:
- Utilized ferrofluid droplets to create SMFRs.
- Developed control strategies for scale and deformation reconfiguration.
- Designed and implemented the M³RA system for actuation.
Main Results:
- SMFRs demonstrated reversible scale changes from centimeters to micrometers.
- Achieved locomotion in structured environments and deformation to navigate narrow gaps.
- Showcased capabilities for traversing sharply variable spaces.
Conclusions:
- SMFRs offer versatile locomotion and navigation in confined environments.
- The M³RA system enables precise control over robot scale and deformation.
- These adaptable robots hold promise for future wireless medical robots in internal human body applications.
