Wear rate of vertically grown ZnO nanowires sliding against steel micro-sphere

Li Yu Lin, Ji Min Seo, Min Chang Jeong, Kyung Jin Koo, Dae Eun Kim, Jae Min Myoung

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


In this work, ZnO nanowires were grown on Si(1 0 0) wafer and sapphire(0 0 1) substrates using metal-organic chemical vapor deposition (MOCVD). The morphology and crystal structure of ZnO nanowires were evaluated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The wear characteristics of ZnO nanowires were measured using an atomic force microscopy (AFM) apparatus. A steel micro-sphere (radius of 12 μm) was attached to the end of the AFM cantilever and slid against the ZnO nanowires using low normal load. The wear rate of ZnO nanowires was quantified by comparing the geometrical shape of ZnO nanowires before and after the wear test. Also, the adhesive force between the sphere and the nanowires was measured before and after the wear test. The increase of adhesive force is due to the increase in contact surface after the wear test.

Original languageEnglish
Pages (from-to)370-376
Number of pages7
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Publication statusPublished - 2007 Jul 15

Bibliographical note

Funding Information:
This research was supported by the Korea Ministry of Science and Technology through the National R&D Project for Nano Science and Technology (M1-0203-00-0031).

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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