AI Article Synopsis
- The study focuses on the optical properties of eccentric nanoshells, which are nanoparticles with an off-center core, using advanced simulation techniques.
- It finds that the shape of these nanoshells creates a complex far-field optical spectrum with distinct plasmon peaks that change based on how the core is positioned.
- Additionally, the near-field enhancements around these structures are much stronger than those of similar concentric nanoshells, making them promising for applications needing significant light intensification.
Article Abstract
We study the optical response of eccentric nanoshells (i.e., spherical nanoparticles with an eccentric spherical inclusion) in the near and the far field through finite-difference time-domain simulations. Plasmon hybridization theory is used to explain the obtained results. The eccentricity generates a far-field optical spectrum with various plasmon peaks. The number, position, and width of the peaks depend on the core offset. Near-field enhancements in the surroundings of these structures are significantly larger than those obtained for equivalent concentric nanoshells and, more importantly, they are almost independent of the illumination conditions. This opens up the door for using eccentric nanoshells in applications requiring intense near-field enhancements.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5216003 | PMC |
| http://dx.doi.org/10.1186/s11671-016-1796-8 | DOI Listing |
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