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Magnetic Implantable Devices and Materials for the Brain.
Xinyan Chen1, Denghua Wu1, Kangle Li2
1Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China.
Small Methods
|September 9, 2025
Summary
Magnetic implants offer wireless brain interfacing for better neural modulation and sensing. These advanced technologies utilize magnetic fields for precise, less invasive brain treatments and diagnostics.
Area of Science:
- Neuroscience
- Biotechnology
- Materials Science
Background:
- Advanced neural technologies are crucial for understanding brain complexity and treating neurological disorders.
- Magnetic fields offer deep tissue penetration for wireless, bidirectional neural interfacing.
- Implantable magnetic devices represent a promising frontier in neural modulation and sensing.
Purpose of the Study:
- To review the rapidly advancing field of magnetic implantable devices and materials for brain modulation and sensing.
- To explore various magnetic transduction mechanisms for neural applications.
- To highlight the potential of magnetic technologies for future brain-computer interfaces.
Main Methods:
- Magnetoelectric (ME) materials for magnetic-to-electric field conversion and neural stimulation.
- Magnetothermal (MT) effects using nanoparticle heating to activate thermosensitive ion channels.
- Magnetomechanical (MM) approaches employing magnetic forces to modulate mechanosensitive channels.
- Implantable magnetoresistive probes for reference-free neural magnetic field measurement.
- Magnetic resonance needles for enhanced metabolic profiling.
- Magnetoelastic systems for sensing biophysical and biochemical conditions via magnetic implant vibration.
Main Results:
- Magnetic fields provide a non-attenuating medium for deep neural interfacing.
- Diverse magnetic strategies enable both neural modulation (stimulation) and sensing.
- Specific methods like ME, MT, and MM offer distinct mechanisms for neural interaction.
- Advanced detection techniques allow for precise measurement and profiling of neural activity and conditions.
Conclusions:
- Magnetic transduction mechanisms offer a versatile toolkit for neural interfacing.
- These technologies promise less invasive and more precise methods for brain function understanding and regulation.
- The integration of magnetic materials and devices is poised to revolutionize neural diagnostics and therapeutics.
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