Fabrication of bismuth nanoballs using thermal oil reflow

Chin Guo Kuo, Chien Cho Chen*, Sheng Jen Hsieh, Wen C. Say

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Sub-micron-size bismuth (Bi) balls with diameters between 100 and 2000 nm were formed on an anodic aluminum oxide (AAO) template using thermal expansion and thermal oil reflow processes. After centrifugal force separation, 100 nm size Bi balls were obtained. In addition, the ball density was approximately 6 × 107/cm2 on an AAO surface. Because of their round shape, the contact angle of the Bi nanoballs on the AAO surface was large after hot oil reflow, making it easy to remove them using ultrasound and to separate different sizes of balls using centrifugal force.

Original languageEnglish
Pages (from-to)1193-1198
Number of pages6
JournalJournal of the Ceramic Society of Japan
Issue number1359
Publication statusPublished - 2008 Nov


  • AAO
  • Bi
  • Centrifugal force
  • Nanoballs
  • Reflow

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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