Strain Engineering of 2D Materials: Issues and Opportunities at the Interface

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Semiconductor device miniaturization drives demand for novel materials.
• Strain engineering is a mature technique in traditional semiconductors.
• Two-dimensional (2D) materials offer unique properties but present new challenges for strain application.

Purpose of the Study:

• To review recent advances in strain engineering of 2D materials.
• To categorize strain applications based on deformation modes.
• To summarize interface mechanics and provide design guidelines.

Main Methods:

• Categorization of strain engineering techniques by in-plane and out-of-plane deformation modes.
• Review of state-of-the-art characterization of 2D material-substrate interface mechanics.
• Analysis of interfacial properties like shear and adhesion.

Main Results:

• Strain engineering of 2D materials offers new avenues for fundamental physics and device applications.
• Deformation modes significantly influence strain application and material response.
• Interfacial properties critically determine the effectiveness of strain in 2D materials.

Conclusions:

• Strain engineering is crucial for developing high-performance 2D material-based devices.
• Understanding and controlling interfacial mechanics are key for deterministic strain design.
• This work provides guidelines for optimizing strain in ultrathin semiconductor applications.