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Updated: Aug 7, 2025

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

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Published on: April 25, 2020

Magnetically and Electrically Responsive Soft Actuator Derived from Ferromagnetic Bimetallic Organic Framework.

Pradeep Sambyal¹, Manmatha Mahato¹, Ashhad Kamal Taseer¹

¹National Creative Research Initiative for Functionally Antagonistic Nano-Engineering, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.

Small (Weinheim an Der Bergstrasse, Germany)

|March 13, 2023

Summary

This summary is machine-generated.

This study introduces a novel dual-responsive soft actuator using neodymium and iron bimetallic organic frameworks (NdFeMOFs@700). This material enables advanced soft robotics with enhanced magnetic and electric actuation capabilities.

Keywords:

PEDOT: PSS bimetallic metal-organic frameworks (MOFs)dual responsive soft actuators soft electronics solvothermal synthesis

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Published on: January 13, 2023

Area of Science:

Materials Science
Robotics
Nanotechnology

Background:

Smart devices and soft robotics require multiresponsive soft actuators with high actuation stroke and stable reversibility.
Existing actuators often lack the dual responsiveness needed for complex, real-world applications.

Purpose of the Study:

To develop a magnetically and electrically dual responsive soft actuator.
To investigate the performance of neodymium and iron bimetallic organic frameworks (NdFeMOFs@700) in soft actuation.

Main Methods:

Fabrication of a dual-responsive soft actuator using NdFeMOFs@700 and PEDOT-PSS.
Characterization of NdFeMOFs@700 for magnetic and electrochemical properties.
Testing of the actuator's performance under magnetic fields and electrical input voltages.

Main Results:

NdFeMOFs@700 exhibits excellent magnetization saturation (166.96 emu g^-1) and a porous carbon structure.
The electro-ionic actuator showed a 4.5 times higher ionic charge storage capacity (68.21 mF cm^-2) and excellent cycle stability compared to PEDOT-PSS alone.
The dual-responsive actuator achieved a bending displacement of 15.46 mm at 1 V and deflection of 10 mm at 50 mT.

Conclusions:

Ferromagnetic bimetallic organic frameworks offer a new pathway for creating dual-responsive soft actuators.
The unique properties of NdFeMOFs@700, including porous structure, redox activity, magnetic properties, and electrochemical capacitance, are key to its performance.
Demonstrated walking movement of a starfish robot using the NdFeMOFs@700 based soft actuators highlights practical applications.