Buckling behavior of tenary one-dimensional van der Waals heterostructures

TL;DR

This study uses molecular dynamics simulations to analyze how temperature and structural factors affect the buckling stability of a novel three-material one-dimensional van der Waals heterostructure.

Contribution

It provides the first detailed investigation of buckling behavior in ternary 1D vdWHs, highlighting temperature effects and the influence of slenderness ratio.

Findings

Increased temperature reduces buckling stability.

Slenderness ratio has minimal impact on strength.

Peak compressive stress decreases with temperature.

Abstract

1D van der Waals heterostructures (1D vdWH) were recently reported to be successfully synthesized. We perform molecular dynamics simulations to investigate the buckling behavior of a 1D vdWH composed of inner carbon nanotube, a middle boron nitride nanotube and an outer molybdenum disulfide nanotube. We find that as the temperature increases, the 1D vdWH gradully loses its stability and the peak value of compressive stress decreases. Slenderness ratio have a slight influence on the strength and stability of 1D vdWH under axial compression.