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Journal of Nanomaterials
Volume 2013 (2013), Article ID 174939, 6 pages
Research Article

Rapid and Efficient Synthesis of Silver Nanofluid Using Electrical Discharge Machining

1Department of Electrical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
2Light Source Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

Received 5 January 2013; Accepted 31 March 2013

Academic Editor: Jian Wei

Copyright © 2013 Kuo-Hsiung Tseng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The electrical discharge machining (EDM) system has been proven feasible as a rapid and efficient method for silver nanofluid preparation. This study prepared the silver nano-fluid via EDM and investigated the relationship between its process parameters and product characteristics. The prior study had found that the silver nano-fluid prepared by EDM contained both silver nanoparticles and silver ions. Silver ions had revealed the cause of the high suspension of the silver nanoparticles. To examine the relationship between the stability of silver nanofluid and the process parameters, this study quantified the relationship of process parameters to the material removal rate (MRR) of silver electrode and silver ion output rate (IOR) in the fluid, in order to achieve the most effective process parameter condition. Furthermore, the stability of silver nano-fluid was analyzed by various devices, including UV-Vis spectroscopy, size-distribution, and Zeta-potential analyzer. The effects of MRR, IOR, particle size, Zeta-potential, and optical properties of silver nanofluid under different process parameters are also discussed.