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Related Experiment Video

Updated: Jul 12, 2025

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
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A Nanozyme-Based Electrode for High-Performance Neural Recording.

Shuangjie Liu1, Yang Wang1, Yue Zhao1

  • 1Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China.

Advanced Materials (Deerfield Beach, Fla.)
|October 26, 2023
PubMed
Summary
This summary is machine-generated.

New nanozyme neural electrodes offer ultrasensitive brain signal recording. These bioinspired devices improve signal-to-noise ratio and reduce neuronal damage, advancing neural recording technology.

Keywords:
acquisition sensitivitybiocatalyticnanozymesneural recording

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Area of Science:

  • Biomaterials Science
  • Neuroscience
  • Nanotechnology

Background:

  • Clinical neural electrodes require high sensitivity and biocompatibility for effective brain disease treatment.
  • Current electrodes face limitations in simultaneously meeting these requirements, hindering precise electronic signal recording.

Purpose of the Study:

  • To develop novel nanozyme-based neural electrodes for multiscale and ultrasensitive neural recording.
  • To enhance signal acquisition sensitivity and reduce tissue damage at the electrode-tissue interface.

Main Methods:

  • Incorporation of bioinspired atomically precise clusters into nanozyme-based electrodes.
  • Utilizing heterogeneous design for quantum transport and biocatalytic processes.
  • Evaluation of electrode performance in rat models, including local field potential recording and seizure activity monitoring.

Main Results:

  • Nanozyme electrodes exhibit 26 times lower impedance and ≈10 times higher sensitivity than state-of-the-art metal and PtIr electrodes.
  • Achieved a signal-to-noise ratio (SNR) of up to 14.7 dB for single-neuron recordings.
  • Demonstrated over 100-fold higher antioxidant and enzyme-like activities, reducing neuronal injury by 67% and improving seizure SNR.

Conclusions:

  • Nanozyme-based neural electrodes represent a significant advancement for ultrasensitive and stable neural recording.
  • These electrodes show potential for precise localization of seizure foci in clinical epilepsy management.
  • The bioinspired design offers a general strategy for improved neural interface performance.