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Related Experiment Video

Updated: Jul 8, 2025

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Free-Standing Carbon Nanotube Embroidered Graphene Film Electrode Array for Stable Neural Interfacing.

Lei Gao1,2, Suye Lv1,3, Yuanyuan Shang4

  • 1CAS Key Laboratory of Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.

Nano Letters
|December 20, 2023
PubMed
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New carbon nanofilm neural probes offer robust, flexible, and cellular-scale interfacing for stable brain recordings. These free-standing microelectrode arrays track neural activity for over two months.

Area of Science:

  • Neuroscience
  • Materials Science
  • Biomedical Engineering

Background:

  • Stable neural interfacing is crucial for brain-computer interfaces and neuroscience research.
  • Current flexible neural probes face challenges in achieving cellular-scale electrode-tissue contact due to their structure.
  • Developing mechanically robust yet flexible probes is essential for long-term neural recording.

Purpose of the Study:

  • To develop and evaluate novel implantable neural probes with enhanced mechanical properties for stable neural interfacing.
  • To investigate the capability of these probes for cellular-scale electrode-tissue interaction.
  • To assess the long-term performance of these probes in tracking neuronal activity.

Main Methods:

  • Fabrication of implantable neural probes using robust carbon nanotube network embroidered graphene (CeG) films.
Keywords:
Carbon nanotube networkChronic neural recordingFlexible neural probeGrapheneNeural interfacing

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  • Characterization of the mechanical properties (ultraflexibility and robustness) of the CeG film microelectrode arrays (CeG_MEAs).
  • Chronic implantation of CeG_MEAs in the brain to record neural activity over an extended period.

    • Main Results:

    • The developed CeG_MEAs exhibit both ultraflexibility and mechanical robustness.
    • These probes enable stable electrode-tissue interfacing at the cellular scale.
    • Chronic implantation demonstrated stable tracking of the same neuronal populations for over two months.

    Conclusions:

    • Ultraflexible and free-standing carbon nanofilms, like CeG, are promising materials for advanced neural probes.
    • The CeG_MEAs facilitate stable and long-term neural interfacing, overcoming limitations of current technologies.
    • These findings highlight the potential of novel nanomaterials for robust and high-fidelity brain recording.