Transparent conducting films based on reduced graphene oxide multilayers for biocompatible neuronal interfaces

Area of Science:

• Neuroscience
• Materials Science
• Biomedical Engineering

Background:

• Implanted electrodes are critical for neuronal interfaces, requiring stable electrical performance and biocompatibility.
• Reduced graphene oxide (rGO) offers high electrical conductivity and transparency, showing potential for advanced applications.
• Systematic studies on graphene-based neuronal interfaces' electrical properties and biocompatibility are limited.

Purpose of the Study:

• To evaluate the biocompatibility and neuronal cell viability of reduced graphene oxide (rGO) multilayers for neuronal interfaces.
• To assess the long-term stability of neurons cultured on rGO substrates.

Main Methods:

• Rat hippocampal neurons were cultured on reduced graphene oxide (rGO) multilayers.
• Neuronal viability was monitored over a 30-day in vitro period.
• Comparison was made with neurons cultured on a standard glass substrate.

Main Results:

• Neuronal viability on rGO multilayers was minimally affected.
• Neuron viability on rGO was comparable to that on glass substrates up to 30 days.
• rGO demonstrated good biocompatibility with cultured hippocampal neurons.

Conclusions:

• Reduced graphene oxide (rGO) multilayers exhibit excellent biocompatibility for neuronal interfaces.
• rGO's properties make it a promising material for next-generation neuronal interface applications.
• Further research can leverage rGO for stable and effective neural implants.