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A novel method of centrifugal processing for the synthesis of lead–bismuth eutectic alloy nanospheres and nanowires

Abstract

In the present study, lead–bismuth (Pb–Bi) eutectic alloy nanospheres and nanowires were fabricated using a process based on centrifugal force. When various centrifugal forces were applied, nanospheres and nanowires were formed on/inside the highly ordered anodic aluminum oxide (AAO) templates. The X-ray diffraction spectrum showed that nanoscale wires were composed of Pb7Bi3 and Bi phases. The scanning electron microscopy (SEM) images proved the formation of nanospheres and nanowires on/inside the alumna channel templates. During centrifugation, the repulsive force between the nanochannel and the alloy melt was calculated from the surface tension on the ultra-fine tube. The force applied to the melt of Pb–Bi inside the AAO was controlled by the centrifugal force.

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Abbreviations

AAO:

Anodic aluminum oxide

l :

Liquid length of injection

γ :

Surface tension of liquid

θ :

Contact angle between liquid and substrate

ΔP :

External pressure forcing the liquid into the channel

r :

Radius of channel

η :

Viscosity of liquid

ɛ :

Coefficient of slip

F :

Centrifugal force

ω:

Angular speed of the centrifuge

m :

Sample weight

R :

Rotation radius of the centrifuge

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Acknowledgement

This work was supported by the National Science Council of the Republic of China under the research contract no. NSC92-2216-E009-019.

Author information

Correspondence to Chin-Guo Kuo.

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Kuo, C., Chao, C. A novel method of centrifugal processing for the synthesis of lead–bismuth eutectic alloy nanospheres and nanowires. Int J Adv Manuf Technol 32, 468–472 (2007). https://doi.org/10.1007/s00170-005-0361-x

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Keywords

  • Lead–bismuth eutectic
  • Nanosphere
  • Nanowire
  • Centrifugal force
  • Anodic aluminum oxide template
  • Ultra-fine tube