Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1502133 | Scripta Materialia | 2007 | 4 Pages |
Abstract
The rapid and mass growth of Cu nanowhiskers on polycrystalline films has been realized. The diameter and length of the nanowhiskers are governed by temperature, film thickness, grain size and time. Here we report a mechanism for the growth of the nanowhiskers. Cu atoms diffuse due to local stress gradients in the grains which originate in the material and geometrical singularities caused by anisotropy. Weak spots in the oxide layers on the films act as initiation sites for the nanowhiskers.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Masumi Saka, Fumihiko Yamaya, Hironori Tohmyoh,