mech2d: An Efficient Tool for High-Throughput Calculation of Mechanical Properties for Two-Dimensional Materials

Area of Science:

• Materials Science
• Computational Materials Science
• Condensed Matter Physics

Background:

• Two-dimensional (2D) materials exhibit unique properties, making them a significant research area.
• Mechanical properties are crucial for the diverse applications of 2D materials.
• Existing tools for calculating and analyzing these properties lack efficiency for high-throughput studies.

Purpose of the Study:

• To introduce the mech2d package, an automated toolkit for calculating and analyzing the mechanical properties of 2D materials.
• To provide a solution for high-throughput computation and analysis of second-order elastic constants (SOECs).
• To facilitate the study of 2D material mechanics by considering material symmetry.

Main Methods:

• Developed the mech2d package, a Python-based toolkit for mechanical property analysis.
• Integrated first-principles calculation engines (e.g., VASP) for energy or strain calculations.
• Implemented both strain-energy and stress-strain approaches for fitting SOECs.
• Enabled automated task submission and collection from local or remote machines with fault tolerance.

Main Results:

• The mech2d package offers a highly automated workflow for mechanical property analysis.
• The toolkit supports high-throughput calculations, significantly improving efficiency.
• Validation was performed on common 2D materials, including graphene, black phosphorene, and GeSe2.

Conclusions:

• The mech2d package provides an effective tool for the high-throughput calculation, analysis, and visualization of 2D material mechanical properties.
• This toolkit addresses the need for automated and robust analysis of SOECs and related properties.
• Mech2d is suitable for researchers studying the mechanical behavior of 2D materials.