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Related Experiment Video

Updated: May 21, 2026

Insertion of Flexible Neural Probes Using Rigid Stiffeners Attached with Biodissolvable Adhesive
06:40

Insertion of Flexible Neural Probes Using Rigid Stiffeners Attached with Biodissolvable Adhesive

Published on: September 27, 2013

A flexible depth probe using liquid crystal polymer.

Sung Eun Lee1, Sang Beom Jun, Hyun Joo Lee

  • 1Department of Electrical Engineering and Computer Science, Inter-University Semiconductor Research Center, Seoul National University, Seoul, 151-744, Korea. shauon83@gmail.com

IEEE Transactions on Bio-Medical Engineering
|June 22, 2012
PubMed
Summary
This summary is machine-generated.

We developed a novel flexible neural probe using liquid crystal polymer (LCP). This LCP probe offers controllable stiffness for brain insertion and enables multichannel neural recordings, overcoming limitations of traditional probes.

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Area of Science:

  • Neuroscience
  • Materials Science
  • Biomedical Engineering

Background:

  • Conventional depth neural probes face limitations such as single recording sites and substrate brittleness.
  • Existing flexible polymer probes often require mechanical reinforcement for brain tissue insertion.
  • Liquid crystal polymer (LCP) offers a unique combination of flexibility and controllable stiffness.

Purpose of the Study:

  • To develop a flexible, depth-type neural probe using liquid crystal polymer (LCP) as a substrate.
  • To overcome the insertion challenges associated with highly flexible neural probes.
  • To demonstrate the feasibility of LCP for fabricating robust and biocompatible neural probes.

Main Methods:

  • Fabrication of a depth-type neural probe utilizing liquid crystal polymer (LCP) as the substrate material.
  • Characterization of the LCP probe's mechanical properties, focusing on stiffness and flexibility.
  • In vivo implantation of the LCP neural probe into rodent brains without guide tools.
  • Multichannel neural recording from the somatosensory motor cortex.
  • Immunohistochemical analysis to verify electrode placement.

Main Results:

  • The LCP-based neural probe demonstrated sufficient stiffness for self-guided insertion through the dura mater.
  • Successful simultaneous multichannel neural recordings were achieved in the rodent somatosensory motor cortex.
  • Immunohistochemistry confirmed accurate electrode placement within the targeted brain regions.

Conclusions:

  • Liquid crystal polymer (LCP) is a viable and advantageous material for fabricating flexible depth-type neural probes.
  • The LCP neural probe design effectively balances flexibility with the necessary stiffness for neural tissue penetration.
  • This novel probe enables minimally invasive, high-density neural recordings in the brain.