Figure 1.

TEM micrograph of different LNEs. The images represent the LNE F2 (a), the LNE F5 (b), the LNE F8 (c), the LNE F11 (d) and the LNE F14 (e)

Zhou et al. Nanoscale Research Letters 2009 5:224-230   doi:10.1007/s11671-009-9469-5