Laser-Induced Graphene Interfaces with Controlled Electrical Conductivity, Topography and Wettability for Biomedical...

Area of Science:

• Biomaterials Engineering
• Nanotechnology
• Neuroscience

Background:

• Conventional graphene fabrication for neural interfaces is costly and complex.
• Laser-induced graphene (LIG) offers a scalable, cost-effective alternative using direct laser writing.
• LIG allows precise control over material properties like conductivity and surface roughness.

Purpose of the Study:

• To engineer and characterize LIG substrates with tailored properties for neural interfaces.
• To assess the stability of LIG materials in biological environments.
• To evaluate the influence of LIG surface architecture on neural cell behavior.

Main Methods:

• Fabrication of three distinct LIG substrates using controlled laser parameters.
• Characterization of LIG properties including wettability, roughness, mechanical, and electrical stability.
• Biocompatibility assays using neural-like cells to assess adhesion, proliferation, and alignment.

Main Results:

• LIG substrates exhibited stable physicochemical properties under physiological conditions.
• Preliminary biocompatibility assays showed encouraging results with neural-like cells.
• Laser-induced patterning significantly influenced cellular behavior, enhancing adhesion and alignment.

Conclusions:

• LIG is a tunable and scalable strategy for developing next-generation neural interfaces.
• Surface architecture of LIG substrates plays a critical role in modulating neural cell responses.
• Engineered LIG materials show significant potential for neuro-biomedical applications.