Abstract
The dependence of nonlinear optical response properties of bimetallic alloying and core-shell structure spherical nanoparticles was investigated as a function of relative composition. Numerical calculations based on Drude model and quasi-static theory were developed to describe these absorption properties. With the increasing gold content, the absorption peaks of both alloying Au-Ag nanospheres and core-shell structure nanospheres red-shift from 402 to 526 nm in a nonlinear way. Furthermore, the linearity of alloying nanospheres is better than that of core-shell structure model. In core-shell structure nanospheres, the shell composition characters play a more important role to influence the optical properties of the bimetallic nanoparticles.
| Original language | English |
|---|---|
| Pages (from-to) | 296-301 |
| Number of pages | 6 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 27 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Mar 2005 |
Keywords
- Absorption
- Core-shell structure
- Gold
- Nanospheres
- Quasi-static theory
- Silver
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