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Recent Advances in Microelectrode Array Interfaces for Organoids.

Dongha Kim1, Hanjun Ryu1,2

  • 1Department of Intelligence Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea.

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|February 26, 2026
PubMed
Summary
This summary is machine-generated.

Three-dimensional microelectrode arrays (3D MEAs) overcome limitations of 2D devices for brain organoid electrophysiology. This review details advances in 3D MEA technology for comprehensive neural network analysis.

Keywords:
3D structuremicroelectrode arrayorganoidstem celltissue interface

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Area of Science:

  • Neuroscience
  • Bioengineering
  • Materials Science

Background:

  • Electrophysiological studies using brain organoids are crucial for understanding neurological disorders.
  • Conventional 2D microelectrode arrays (MEAs) offer high spatiotemporal resolution but are limited to basal tissue surfaces.
  • This limits comprehensive analysis of complex 3D neural networks within organoids.

Purpose of the Study:

  • To review recent advancements in 3D MEA technologies for brain organoid electrophysiology.
  • To focus on device geometries, electrode designs, and signal acquisition strategies.
  • To bridge the gap in analyzing 3D neural networks within organoids.

Main Methods:

  • Review of photolithography-based fabrication processes for submicron-scale structures.
  • Integration of 3D MEAs with perfusion systems and shape-transformable architectures.
  • Discussion of noninvasive to invasive neural signal acquisition strategies.

Main Results:

  • Photolithography enables improved device flexibility, spatial resolution, and signal-to-noise ratio.
  • Integrated systems facilitate stable, long-term electrophysiological monitoring of organoids.
  • 3D MEAs provide enhanced capabilities for studying complex neural networks.

Conclusions:

  • 3D MEA technology represents a significant advancement for organoid-based neuroscience.
  • These technologies offer promising opportunities for neurological disorder research and therapeutic development.
  • Future perspectives in 3D MEA development are discussed.