DNA Detection with Single-Layer Ti₃C₂ MXene Nanopore

Area of Science:

• Materials Science
• Biotechnology
• Nanotechnology

Background:

• Biological nanopores face stability issues under stress, limiting their use in high-throughput sequencing.
• Solid-state nanopores from 2D nanomaterials offer high-resolution DNA detection but material choice is critical.
• MXene (specifically Ti3C2) is a promising 2D material with potential for nanopore applications.

Purpose of the Study:

• To investigate the potential of MXene (Ti3C2) as a material for solid-state nanopore-based DNA detection.
• To simulate and analyze the interaction between MXene nanopores and single-stranded DNA.
• To assess MXene's efficiency for differentiating DNA bases during translocation.

Main Methods:

• Utilized molecular dynamics (MD) simulations to model MXene nanopores and DNA interactions.
• Simulated the translocation of single-stranded DNA through a Ti3C2 nanopore.
• Analyzed simulation data to identify distinct features associated with different DNA bases.

Main Results:

• MXene-based nanopores demonstrated the ability to detect and differentiate individual DNA bases.
• Specific interaction features were identified that distinguish the passage of different nucleotide bases.
• The simulations provide evidence for MXene's capability in high-resolution DNA sequencing.

Conclusions:

• MXene (Ti3C2) is a viable candidate material for developing advanced solid-state nanopore DNA sequencing platforms.
• The identified features offer a basis for designing MXene nanopore sensors for DNA analysis.
• This research contributes to the advancement of next-generation sequencing technologies using novel nanomaterials.