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Hexagonal plasmonic necklaces of silver nanoparticles organized in 2D superlattices on functional ferroelectric templates are fabricated in large-scale spatial regions by using a surfactant-free photo-deposition process. The plasmonic necklaces support broad radiative plasmonic resonances allowing the enhancement of second harmonic generation (SHG) at the ferroelectric domain boundaries. A 400-fold SHG enhancement is achieved at the near-UV spectral region with subsequent interest for technological applications.
- Silver nanoparticles
- Plasmonic necklaces
- Second harmonic generation
Gómez-Tornero, A., Tserkezis, C., Mateos, L., Bausá, L. E., & Ramírez, M. O. (2017). 2D of hexagonal plasmonic necklaces for enhanced second harmonic generation. Advanced Materials, 29(15), . https://doi.org/10.1002/adma.201605267