Optimization of the bimetallic gold and silver alloy nanoshell for biomedical applications in vivo

DaJian Wu; XiaoJun Liu
August 2010
Applied Physics Letters;8/9/2010, Vol. 97 Issue 6, p061904
Academic Journal
The far- and near-field properties of Au/Ag alloy nanoshell have been investigated by using Mie theory. With increasing Au content in shell, the dipole peak of alloy nanoshell shows a redshift from that of Ag nanoshell to that of Au nanoshell. It is found that the effect of the variation in shell thickness on the near-field for Au/Ag alloy nanoshells plays dominant role and the variation in the Au content leads to a significant modulation. We have further found that the near-infrared excitation at smaller wavelength can induce stronger near-field in Au/Ag alloy nanoshell with suitable geometry.


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