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Updated: Sep 2, 2025
08:24
Bioinspired Soft Robot with Incorporated Microelectrodes
Published on: February 28, 2020
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Bacteria-inspired magnetically actuated rod-like soft robot in viscous fluids
Anuruddha Bhattacharjee1, Mehdi Jabbarzadeh2, Gokhan Kararsiz1
1Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75205, United States of America.
Bioinspiration & Biomimetics
|August 4, 2022
Summary
This study presents a bacteria-inspired soft robot capable of propulsion in viscous fluids. Its unique design allows for boundary rolling and swimming, offering potential for minimally invasive in vivo applications.
Area of Science:
- Robotics
- Biomimetics
- Fluid Dynamics
Background:
- Soft robots offer advantages in complex environments.
- Bacteria-inspired designs are crucial for micro-scale locomotion.
- Propulsion in highly viscous fluids presents significant challenges.
Purpose of the Study:
- To design and develop a bacteria-inspired rod-like soft robot.
- To explore its locomotive dynamics and morphological adaptability in viscous fluids.
- To investigate propulsion mechanisms and influencing factors.
Main Methods:
- Fabrication of tapered, hollow rod-like soft scaffolds using hydrogel.
- Embedding micro-magnets for actuation via a rotating magnetic field.
- Experimental observation of propulsion modes and numerical simulations.
Main Results:
- The soft robot demonstrated two distinct propulsion modes: boundary rolling and swimming.
- Geometrical asymmetry enabled propulsion in the low Reynolds number (Re≪1) regime.
- Numerical simulations elucidated propulsion dynamics influenced by design, rotation frequency, and viscosity.
Conclusions:
- A simple geometrical asymmetry is key for soft robot propulsion in viscous fluids.
- The developed soft robot shows promise for minimally invasive in vivo applications.
- Further research is needed to optimize soft robots for biomedical integration.
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