【摘 要】
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We investigate the nanostructure,surface plasmon resonance (SPR) absorption and nonlinear enhancement of Au/Ag alloyed hollow nanoshells prepared by the replace
【机 构】
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Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education,Department of
论文部分内容阅读
We investigate the nanostructure,surface plasmon resonance (SPR) absorption and nonlinear enhancement of Au/Ag alloyed hollow nanoshells prepared by the replacement reaction of Ag nanoparticles in a HAuCl4 aqueous solution.As the volume of HA uCl4 increases from 0 mL to 0.5 mL,the SPR band of the Au/Ag alloyed nanoshells is tuned from 430nm to 780nm,and the third-order nonlinear optical susceptibility is enhanced nearly by an order of magnitude,which indicates a large enhancement of local field in the Au/Ag alloyed hollow nanoshells with hole defects.
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