How can a particle absorb more than the light incident on it?

Key Points

• The research aims to explain how certain particles can absorb more light than that which directly hits them.
• Examine the absorption properties of metallic particles in the ultraviolet spectrum.
• Investigate insulating particles in the infrared spectrum.
• Analyze the behavior of field lines of the Poynting vector near illuminated particles.
• Metallic particles absorb more light through surface plasmon excitation at ultraviolet frequencies.
• Insulating particles exhibit higher absorption via surface phonon excitation at infrared frequencies.
• Presenting a larger effective target area for incident light contributes to increased absorption.

Abstract