Functional Microarray Platform with Self-Assembled Monolayers on 3C-Silicon Carbide.

Area of Science:

• Biomedical engineering
• Materials science
• Biosensor technology

Background:

• Current bioplatforms lack high-throughput, label-free detection capabilities.
• Silicon carbide (SiC) is a promising material for biomedical applications due to its inertness, strength, biocompatibility, and unique semiconductor and plasmonic properties.
• 3C-SiC is particularly suitable for microelectromechanical systems (MEMS) fabrication, enabling miniaturized, real-time multiplexed assays.

Purpose of the Study:

• To explore silicon carbide (SiC) as a material for high-throughput, label-free biosensing.
• To develop a method for covalently functionalizing 3C-SiC films using silane self-assembled monolayers (SAMs).
• To create a novel platform for functionalized microarray surfaces using high-throughput glycan arrays.

Main Methods:

• Utilized monocrystalline 3C-SiC films for surface functionalization.
• Employed various silane self-assembled monolayers (SAMs) for covalent attachment of biomolecules.
• Developed high-throughput glycan arrays on SiC microstructures, including robotic printing on free-standing SiC.

Main Results:

• Successfully demonstrated the covalent functionalization of 3C-SiC surfaces using silane SAMs.
• Created functionalized microarray surfaces suitable for high-throughput analysis.
• Showcased robotic printing of high-throughput arrays on SiC microstructures.

Conclusions:

• Silicon carbide (SiC) is a viable and versatile material for developing advanced label-free biosensors.
• The developed SiC-based glycan array platform demonstrates proof of principle for studying biological interactions.
• This approach can be extended to immobilize other biomolecules, significantly advancing biological interaction studies.