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Laser-controlled precipitation of gold nanoparticles in silicate glasses

Published online by Cambridge University Press:  31 January 2011

Xiongwei Jiang ,
Jianrong Qiu ,
Huidan Zeng  and
Congshan Zhu
Xiongwei Jiang
Affiliation:
Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences and Japan Science and Technology Corporation, Shanghai 201800, People's Republic of China
Jianrong Qiu
Affiliation:
Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences and Japan Science and Technology Corporation, Shanghai 201800, People's Republic of China
Huidan Zeng
Affiliation:
Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences and Japan Science and Technology Corporation, Shanghai 201800, People's Republic of China
Congshan Zhu
Affiliation:
Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences and Japan Science and Technology Corporation, Shanghai 201800, People's Republic of China
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Abstract

We report on the observation of space-selective precipitation of gold nanoparticles in Au2O-doped silicate glass by a method of irradiation with an 800-nm femtosecond laser and further heat treatment. The irradiated region of the glass first became gray in color after irradiation with the femtosecond laser and then turned red after further heat treatment at around 520 °C, indicating that gold nanoparticles have precipitated in the irradiated region of the glass. A possible mechanism has been suggested that the Au+ ions in the region irradiated are reduced to Au0 atoms by the femtosecond laser, and then the Au0 atoms accumulate to form gold nanoparticles with the glass sample heat treated. The observed phenomenon should have potential applications in the fabrication of ultrafast all-optical switches.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 9 , September 2003 , pp. 2097 - 2100
Copyright
Copyright © Materials Research Society 2003

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References

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