nanotubes. A typical example is shown in Figure 5.28, where a ZrSe 2 particle is
crystallized in an “onion” form.
Similar particles to those in Figure 5.28 were also observed in connection with
multiwall fullerenes. Such carbon particles seem to collapse under the influence of
surface tension. In fact, in the case of carbon the pressure at the center of such an
onion particle can become so high that the graphite-like structures become unstable
and may transform into the diamond structure [16]. Based on this experimental
Figure 5.27 Three multiwall WS 2 nanotubes with diameters ranging from 15 to 20 nm. The insert
shows one of the tubes at higher magnification; four walls are visible. (Reproduced with
permission by Reshef Tenne, Weizmann Institut, Israel.)
Figure 5.28 Multiwall fullerene, “onion crystal,” consisting of ZrSe 2 [15]. (Reproduced with
permission by Elsevier.)
110j 5 Nanotubes, Nanorods, and Nanoplates
crystallized in an “onion” form.
Similar particles to those in Figure 5.28 were also observed in connection with
multiwall fullerenes. Such carbon particles seem to collapse under the influence of
surface tension. In fact, in the case of carbon the pressure at the center of such an
onion particle can become so high that the graphite-like structures become unstable
and may transform into the diamond structure [16]. Based on this experimental
Figure 5.27 Three multiwall WS 2 nanotubes with diameters ranging from 15 to 20 nm. The insert
shows one of the tubes at higher magnification; four walls are visible. (Reproduced with
permission by Reshef Tenne, Weizmann Institut, Israel.)
Figure 5.28 Multiwall fullerene, “onion crystal,” consisting of ZrSe 2 [15]. (Reproduced with
permission by Elsevier.)
110j 5 Nanotubes, Nanorods, and Nanoplates