10.6.4
Use of SiNWs as Templates for Nanomaterial Growth [79]
A novel template effect of SiNWs was discovered accidentally trying to disperse
SiNWs in common solvents such as CHCl 3 , CH 2 Cl 2 and CH 3 I. A 15 min bath
sonication resulted in a colloidal solution, the products of which were characterized by HRTEM, EELS and Raman. The analysis revealed that under sonication
the SiNWs acted as templates on which carbon nanotubes and carbon nano-onions
formed (Figure 10.32). Moreover, in addition to these known carbon structures,
Fig. 10.31. Electrical responses with time of the Si nanowire
bundle to N 2 , a mixture of N 2 and NH 3 (NH 3 concentration:
1000 ppm), and air with a relative humidity of 60%; (a) when
the gases were introduced into the chamber and (b) when the
gases were pumped away [78].
10 Oxide-Assisted Growth of Silicon and Related Nanowires
346
Use of SiNWs as Templates for Nanomaterial Growth [79]
A novel template effect of SiNWs was discovered accidentally trying to disperse
SiNWs in common solvents such as CHCl 3 , CH 2 Cl 2 and CH 3 I. A 15 min bath
sonication resulted in a colloidal solution, the products of which were characterized by HRTEM, EELS and Raman. The analysis revealed that under sonication
the SiNWs acted as templates on which carbon nanotubes and carbon nano-onions
formed (Figure 10.32). Moreover, in addition to these known carbon structures,
Fig. 10.31. Electrical responses with time of the Si nanowire
bundle to N 2 , a mixture of N 2 and NH 3 (NH 3 concentration:
1000 ppm), and air with a relative humidity of 60%; (a) when
the gases were introduced into the chamber and (b) when the
gases were pumped away [78].
10 Oxide-Assisted Growth of Silicon and Related Nanowires
346