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  direction. (e) The lattice was spaced at 0.327 nm corresponding to Ge (111). The inset is a diffractogram obtained from the HRTEM image.
Yun et al. Nanoscale Research Letters 2011 6:287 doi:10.1186/1556-276X-6-287