Inter-layer potential for hexagonal boron nitride.

Area of Science:

• Materials Science
• Condensed Matter Physics
• Computational Chemistry

Background:

• Layered hexagonal boron nitride (h-BN) is a crucial material with unique electronic and mechanical properties.
• Accurate modeling of interlayer forces is essential for understanding h-BN based nanostructures and devices.
• Existing force-field models may not fully capture the complex interactions within h-BN systems.

Purpose of the Study:

• To develop a novel, accurate, and efficient interlayer force-field for hexagonal boron nitride (h-BN) based structures.
• To parameterize the force-field to reproduce key physical phenomena in h-BN systems.
• To enable large-scale simulations of complex h-BN architectures.

Main Methods:

• Development of a three-term interlayer force-field model.
• Inclusion of dispersive attraction, anisotropic repulsion, and electrostatic interactions.
• Parameterization using binding, sliding, telescoping, and rotation energies of h-BN systems.

Main Results:

• The proposed force-field successfully models interlayer binding and sliding energies in planar h-BN dimers.
• It accurately captures interlayer telescoping and rotation in double-walled boron-nitride nanotubes.
• The potential demonstrates good agreement across various crystallographic orientations.

Conclusions:

• The new force-field provides a robust tool for simulating large-scale h-BN layered structures.
• It enhances the predictive capability for the mechanical and structural behavior of h-BN based materials.
• This development facilitates further research and application of h-BN in advanced technologies.