Decoding atomic landscapes: Integrating electronic structure theory and high-resolution atomic force microscopy

Area of Science:

• Surface Science
• Nanotechnology
• Scanning Probe Microscopy

Background:

• High-resolution atomic force microscopy (HR-AFM) allows imaging and manipulation at the atomic level.
• Functionalizing the scanning probe with a CO molecule enhances visualization capabilities.

Purpose of the Study:

• To provide a comprehensive overview of HR-AFM from experimental and theoretical viewpoints.
• To detail the principles, methods, and applications of HR-AFM for atomic-scale characterization.

Main Methods:

• Frequency-modulation atomic force microscopy (FM-AFM) principles and tip functionalization.
• Integration of AFM with scanning tunneling microscopy (STM) for enhanced imaging and spectroscopy.
• Theoretical approaches including virtual tip method, DFT, and frozen density embedding theory.

Main Results:

• HR-AFM enables visualization of chemical bonds, intermolecular interactions, and orbital signatures.
• Applications include resolving bond orders, functional groups, and characterizing industrial hydrocarbons.
• Demonstrated controlled bond rupture and manipulation at the atomic scale.

Conclusions:

• HR-AFM, combined with first-principles modeling, reveals previously inaccessible surface phenomena.
• The technique decodes atomic landscapes at the single-atom and molecular scale.
• Advances in HR-AFM extend to state-resolved imaging of quantum defects in 2D materials.