Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1486843 | Journal of Science: Advanced Materials and Devices | 2016 | 4 Pages |
Abstract
We study the cascaded plasmon resonant field enhancement in core–shell nanoparticles using the coupled dipole method. It is found that internal field inside protein-conjugated gold nanoparticles remains constant for large wavelengths of light but is significantly enhanced at 5944 nm due to the screening from the protein shell. The maximum ratio of the internal field to the incident field can reach up to 12. Effects from surrounding nanoparticles on the peak position in the internal field spectra are relatively weak. These findings pave a pathway for designing the state-of-the-art biosensing based on plasmonic-nanoantenna in infrared regime.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Anh D. Phan, Trinh X. Hoang,