: Theory for Size Dependent Surface Plasmon Resonance of Capped Metal Nanoparticles with Atomic Steps

Key Points

• To develop a theory centered on work function that explains the localized surface plasmon resonance energy in capped metal nanoparticles with atomic steps.
• Theoretical analysis of localized surface plasmon resonance energy in non-scattering regime.
• Consideration of work function variations across metal nanoparticles.
• Focus on atomic step features in particle structure.
• Developed theory predicts variations in plasmon resonance energy based on particle size and structure.
• Confirmed the significance of atomic steps in affecting localized surface plasmon resonance.