Topological visualization of the plasmonic resonance of a nano C-aperture

The plasmonic response of a nano C-aperture is analyzed using the Vector Field Topology (VFT) visualization technique. The electrical currents that are induced on the metal surfaces when the C-aperture is excited by light is calculated for various wavelengths. The topology of this two-dimensional current density vector is analyzed using VFT. The plasmonic resonance condition is found to coincide with a distinct shift in the topology which leads to increased current circulation. A physical explanation of the phenomenon is discussed. Numerical results are presented to justify the claims. The analyses suggest that VFT can be a powerful tool for studying the physical mechanics of nano-photonic structures.

Automated summary

The plasmonic response of a nano C-aperture is analyzed using the Vector Field Topology (VFT) visualization technique. The induced electrical currents on the metal surfaces and the topology of the current density vector are calculated and analyzed. A distinct shift in the topology is found to coincide with the plasmonic resonance condition, leading to increased current circulation. Numerical results support the claims and suggest that VFT is a powerful tool for studying nano-photonic structures.