FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Synthesis and Optical Responses of Ag@Au/Ag@Au Double Shells |
LI Ying-Ying, LIU Xiao-Li, YANG Da-Jie, HAO Zhong-Hua**, WANG Qu-Quan** |
Key Laboratory of Artificial Micro- and Nano-structures (Ministry of Education), and School of Physics and Technology, Wuhan University, Wuhan 430072
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Cite this article: |
LI Ying-Ying, LIU Xiao-Li, YANG Da-Jie et al 2015 Chin. Phys. Lett. 32 024205 |
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Abstract We synthesize hollow-structured Ag@Au nanoparticles with single porous shell and Ag@Au/Ag@Au double shells by using the galvanic replacement reaction and investigate their linear and nonlinear optical properties. Our results show that the surface plasmon resonance wavelength of the hollow porous nanoparticles could be easily tuned in a wide range in the visible and near infrared region by controlling the volume of HAuCl4. The nonlinear optical refraction of the double-shelled Ag@Au/Ag@Au nanoparticles is prominently enhanced by the plasmon resonance. Our findings may find applications in biosensors and nonlinear optical nanodevices.
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Published: 20 January 2015
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PACS: |
42.65.-k
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(Nonlinear optics)
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52.25.-b
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(Plasma properties)
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78.40.-q
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(Absorption and reflection spectra: visible and ultraviolet)
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78.67.Rb
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(Nanoporous materials)
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Abstract
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