Fabrication of a Pb-Sn nanowire array gas sensor using a novel high vacuum die casting technique

Chin Guo Kuo, Ho Chang*, Lih Ren Hwang, Shu Hor, Jia Shin Chen, Guo yan Liu, Sheng Cheng Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


In this study, an anodic aluminum oxide nanomold was obtained by etching on an aluminum substrate at a purity of 99.7% with an oxalic acid electrolyte. After etching, a nanomold was prepared with pores that were measured at 80 nm in diameter. This nanomold was used as a base. Using the vacuum casting method, the Pb-Sn alloy was die-cast into the nanomold and consequently shaped into a Pb-Sn alloy nanowire of 80 nm in diameter and 50 μm in length. After solidification, a Pb-Sn nanowire array was obtained. The array of Pb-Sn nanowires prepared in this study can be applied to a gas sensor. Microstructural analysis of the AAO nanomold and the Pb-Sn nanowire array are performed by SEM and XRD.

Original languageEnglish
Pages (from-to)481-484
Number of pages4
JournalElectronic Materials Letters
Issue number4
Publication statusPublished - 2013 Jul


  • Pb-Sn alloy
  • anodic aluminum oxide nanomold
  • array nanowires
  • gas sensor
  • vacuum die casting

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials


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