3D-printed microfluidic integrated magnetic robot for biofluid analysis
Yunfan Li1, Peilong Li1, Jiajie Zhan1
1School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei, 430072, China.
Biosensors & Bioelectronics
|November 3, 2025
Summary
A 3D-printed magnetic robot autonomously processes biofluids using integrated microfluidics. This innovative device offers wireless control for tasks like drug delivery and diagnostics, advancing automated microfluidic systems.
Area of Science:
- Biomedical Engineering
- Microfluidics
- Robotics
Background:
- Conventional microfluidic systems face challenges in fabrication, fluid control, and automation.
- There is a need for advanced platforms for autonomous biofluid processing in diagnostics and biosensing.
Purpose of the Study:
- To develop a 3D-printed microfluidic integrated magnetic robot for autonomous biofluid processing.
- To overcome limitations of existing microfluidic platforms through additive manufacturing and integrated functionalities.
Main Methods:
- Utilized additive manufacturing (3D printing) to create a monolithic microfluidic device.
- Integrated a unidirectional valve-channel, pump microcavity, and conductive magnetic diaphragm.
- Employed magnetic actuation for locomotion and fluid pumping, with piezoresistive self-sensing capabilities.
Main Results:
- Achieved magnetically actuated locomotion up to 2.45 mm/s and high-throughput fluid pumping (685 μL/min).
- Demonstrated sensitive piezoresistive self-sensing (59.95 MPa⁻¹) for distinguishing operational status.
- Successfully performed wireless drive-sensing tasks: self-assembly, fluid transport, drug delivery, and biofluid sampling.
Conclusions:
- The 3D-printed magnetic robot enables autonomous, intelligent, and high-performance microfluidic biofluid analysis.
- The device exhibits excellent biocompatibility, suggesting potential for in vivo applications.
- This work represents a significant advancement in automated microfluidic systems for biosensing and diagnostics.
