Figure 1.

Observations of the GeNW. (a) Low-magnification SEM image of as grown GeNWs. (b) High-magnification SEM image of GeNWs 40-80 nm in diameter. (c) TEM image of a single GeNW. (d) The HRTEM image shows that the GeNW was grown in the [111] direction. (e) The lattice was spaced at 0.327 nm corresponding to Ge (111). The inset is a diffractogram obtained from the HRTEM image.