Defects and defect-mediated engineering of two-dimensional materials: challenges and open questions

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Defects in low-dimensional materials, particularly 2D systems, have a pronounced effect on properties compared to bulk solids.
• The unique geometry of 2D materials facilitates defect formation through environmental interactions or energetic particle impacts (ions, electrons).
• Existing models for defect production in bulk materials often require modification for 2D systems.

Purpose of the Study:

• To identify and discuss the key challenges and open questions in the field of defective 2D materials.
• To explore the interaction dynamics between energetic particles and low-dimensional targets.
• To address the defect-mediated engineering of 2D system properties.

Main Methods:

• Review of existing literature and research findings on defects in 2D materials.
• Synthesis of discussions and insights from the "Defect-mediated engineering of nanomaterials for energy and quantum applications" symposium.
• Identification of knowledge gaps and future research directions.

Main Results:

• Numerous studies exist on the physics and chemistry of defects in 2D materials, but challenges remain largely underexplored.
• Specific challenges include understanding defect behavior, particle-2D material interactions, and effective defect engineering.
• The Beilstein-Institut symposium provided a platform to consolidate current understanding and identify future research needs.

Conclusions:

• Significant challenges persist in fully understanding and controlling defects in 2D materials for targeted applications.
• Addressing these challenges requires novel approaches and modifications of existing theories.
• Proposed solutions and work-arounds aim to accelerate progress in defect-mediated engineering of 2D systems.